3641
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 3984
- Proper Divisor Sum (Aliquot Sum)
- 343
- 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
- 3300
- Möbius Function
- 1
- Radical
- 3641
- 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
- 118
- 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
- no
- Odd
- yes
Appears in sequences
- Generalized Stirling numbers, [n+2,n]_2.at n=11A001701
- Divisors of 2^30 - 1.at n=32A003538
- Positions of remoteness 2 in Beans-Don't-Talk.at n=6A005698
- Hexagonal prism numbers: a(n) = (n + 1)*(3*n^2 + 3*n + 1).at n=10A005915
- 4-dimensional analog of centered polygonal numbers.at n=10A006322
- 7th-order maximal independent sets in cycle graph.at n=54A007389
- Numbers n such that game of n X n Button Madness need have no solution; this lists only the primitive elements of the set.at n=11A007802
- Coordination sequence T1 for Zeolite Code AWW.at n=43A008045
- Coordination sequence T1 for Zeolite Code YUG.at n=39A008247
- a(n) = (1 - (-8)^n)/9.at n=4A014990
- Triangle of q-binomial coefficients for q=-8.at n=16A015118
- Triangle of q-binomial coefficients for q=-8.at n=19A015118
- Gaussian binomial coefficient [ n,4 ] for q = -8.at n=1A015294
- a(n) = 7*a(n-1) + 8*a(n-2), a(0) = 0, a(1) = 1.at n=5A015565
- Positive integers n such that 2^n == 2^11 (mod n).at n=48A015935
- Cyclotomic polynomials at x=8.at n=10A019326
- Pseudoprimes to base 8.at n=43A020137
- Strong pseudoprimes to base 8.at n=8A020234
- Strong pseudoprimes to base 64.at n=18A020290
- Numbers k such that the continued fraction for sqrt(k) has period 58.at n=15A020397