6374
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 9564
- Proper Divisor Sum (Aliquot Sum)
- 3190
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 3186
- Möbius Function
- 1
- Radical
- 6374
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 2
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 124
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- Coordination sequence for MgCu2, Cu position.at n=20A009930
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 78.at n=21A031576
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 42 ones.at n=27A031810
- Numbers n such that there are equal numbers of 0's and 1's in first n digits of binary representation of Pi.at n=14A039624
- Numbers whose base-5 representation contains exactly two 0's and three 4's.at n=16A045213
- Trajectory of n under the Reverse and Add! operation carried out in base 2 does not reach a palindrome and (presumably) does not join the trajectory of any term m < n.at n=29A075252
- a(n) = smallest k such that the base-2 Reverse and Add! trajectory of A075252(n) joins the trajectory of k.at n=29A092211
- Half the number of nXnXn triangular binary arrays with the sum of each element's NW E SW neighbors unequal to the sum of its NE W SE neighbors.at n=7A109618
- Number of base 18 circular n-digit numbers with adjacent digits differing by 1 or less.at n=7A124711
- Elements of A005282 that are also the sum of a pair of not necessarily distinct elements of A005282.at n=13A133604
- Number of primes between A001605(n) and A001605(n+1).at n=49A134851
- Where zeros occur in the 1-0 race in the binary expansion of Pi-3; that is, n such that A174832(n) = 0.at n=6A178980
- Numbers n such that 3 and 5 do not divide swing(n) = A056040(n).at n=29A196748
- Numbers n such that 3, 5 and 7 do not divide swing(n) = A056040(n).at n=10A196749
- Records in A119632.at n=17A210611
- Numbers k such that 2^k - 1 - Sum_{prime p<k} 2^p is prime.at n=28A215888
- Number of n X n 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, and rows and columns lexicographically nondecreasing.at n=5A229438
- Number of nX6 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, and rows and columns lexicographically nondecreasing.at n=5A229443
- T(n,k)=Number of nXk 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, and rows and columns lexicographically nondecreasing.at n=60A229445
- Number of 6 X n 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, and rows and columns lexicographically nondecreasing.at n=5A229449