8606
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
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 13944
- Proper Divisor Sum (Aliquot Sum)
- 5338
- 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
- 3960
- Möbius Function
- -1
- Radical
- 8606
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 109
- 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
- Number of asymmetric rooted connected graphs where every block is a complete graph.at n=12A007561
- Number of integer points (x,y,z) at distance <= 0.5 from sphere of radius n.at n=26A016728
- Denominators of continued fraction convergents to sqrt(919).at n=12A042777
- Numbers k such that sopf(k) = 2*sopf(k+1), where sopf(k) = A008472.at n=12A064112
- Write down decimal expansion of Euler-Mascheroni constant gamma (A001620); divide up into chunks of minimal length so that chunks are increasing numbers and do not begin with 0.at n=6A098967
- Maximum number of different determinants that can be produced by permuting the elements of a 3 X 3 integer matrix with nonnegative entries <= n.at n=25A099834
- Row sums of the slanted Catalan convolution table A100247.at n=5A100248
- Smallest a(n) such that the prime factorization of a(n)! contains at least one factor to each exponent between 1 and n.at n=37A177442
- Row sums of A179318.at n=9A179381
- Molecular topological indices of the pan graphs.at n=24A192836
- Number of 6 X 6 0..n matrices with each 2 X 2 subblock idempotent.at n=29A224668
- Number of partitions of 2n into exactly n nonzero decimal palindromes.at n=37A319454
- Number of edges in the directed graph for the Reversed Zeckendorf game with starting number n.at n=40A389617