6364
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 11704
- Proper Divisor Sum (Aliquot Sum)
- 5340
- 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
- 3024
- Möbius Function
- 0
- Radical
- 3182
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 3
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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 106
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- 9-gonal (or enneagonal or nonagonal) numbers: a(n) = n*(7*n-5)/2.at n=43A001106
- Coordination sequence for MgCu2, Mg position.at n=20A009931
- Numbers k such that k | (3^k + 3).at n=14A015888
- Pseudoprimes to base 9.at n=40A020138
- Pseudoprimes to base 53.at n=45A020181
- Numbers k such that the continued fraction for sqrt(k) has period 60.at n=25A020399
- Number of 1's in n-th term of A007651.at n=33A022466
- n written in fractional base 9/6.at n=40A024654
- Even 9-gonal (or enneagonal) numbers.at n=21A028992
- Pair up the numbers.at n=31A030655
- a(n) = (2*n+1)*(7*n+1).at n=21A033572
- Numbers ending with '4' that are the difference of two positive cubes.at n=16A038859
- (n+4)^3 - n^3.at n=20A038866
- 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=10A039624
- McKay-Thompson series of class 36D for the Monster simple group.at n=38A058647
- a(n) = (2*n-1)*(n^2 -n +2)/2.at n=18A063488
- Expansion of Molien series for Clifford group for the Quebbemann codes over F_8.at n=6A069247
- Numbers n such that sigma(n) - sigma(reverse(n)) = phi(n).at n=1A071847
- Number of partitions of n into distinct and relatively prime parts.at n=54A078374
- Non-palindromic n and its digit reversal have the same sum of prime factors (with repetition).at n=24A085607