6346
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
- 8
- Divisor Sum
- 10080
- Proper Divisor Sum (Aliquot Sum)
- 3734
- 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
- 2988
- Möbius Function
- -1
- Radical
- 6346
- Omega Function (Ω)
- 3
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 80
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- a(n) = floor(n*(n-1)*(n-2)*(n-3)/9).at n=17A011919
- Numbers k such that the continued fraction for sqrt(k) has period 68.at n=18A020407
- Fibonacci sequence beginning 2, 26.at n=13A022375
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 38 ones.at n=28A031806
- Numbers k such that 33*2^k+1 is prime.at n=24A032366
- a(n)=T(2n-1,n), array T given by A048212.at n=41A048221
- Coordination sequence for ReO_3 net with respect to oxygen atom O_1.at n=46A066394
- Diagonal in array of n-gonal numbers A081422.at n=18A081435
- Starting positions of strings of three 4's in the decimal expansion of Pi.at n=10A083615
- a(n) = 3*n^2 - 2.at n=45A100536
- Partial sums of A004977.at n=23A116100
- Product of a prime number p and the number of primes smaller than p.at n=38A117495
- a(n) = floor(n*(n^3-n-3)/(2*(n-1))).at n=21A117561
- Numbers k that divide floor((4/3)^k).at n=11A118502
- Number of Dyck paths such that the sum of the peak-abscissae is n.at n=43A129528
- Numerator of partial sums of a series for 3*(Pi-3).at n=5A130411
- a(n) = 171*n + 19.at n=37A139619
- Nonprimes formed by concatenation of the decimal digits of a nonprime and its index.at n=38A154507
- Numbers k such that k^2 + 1 == 0 (mod 41^2).at n=7A157116
- Number of n X 4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,4,2,0,1 for x=0,1,2,3,4.at n=8A196859