7601
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
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 8304
- Proper Divisor Sum (Aliquot Sum)
- 703
- 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
- 6900
- Möbius Function
- 1
- Radical
- 7601
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 31
- 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
- Positive integers n such that 2^n == 2^11 (mod n).at n=70A015935
- Strong pseudoprimes to base 89.at n=13A020315
- a(n) is the smallest number that is the sum of 3 nonzero squares in exactly n ways.at n=35A025414
- Numerators of poly-Bernoulli numbers B_n^(k) with k=2.at n=13A027643
- 5-wave sequence.at n=31A038201
- Second line of 5-wave sequence A038201.at n=7A038340
- Numerator of expected length of longest increasing subsequence of a permutation of length n.at n=7A054676
- Cyclotomic polynomials Phi_n at x=phi, floored down (where phi = tau = (sqrt(5)+1)/2).at n=33A063703
- Semiprimes p1*p2 such that p2 mod p1 = 9, with p2 > p1.at n=38A064907
- a(n) = n^3 - n^2 + 1.at n=20A100104
- Let N(n)(x) be the Nørlund polynomials as defined in A001898, with N(n)(1) equal to the usual Bernoulli numbers A027641/A027642. Sequence gives numerators of N(n)(2).at n=12A100615
- Iccanobirt prime indices (2 of 15): Indices of prime numbers in A102112.at n=9A102132
- Semiprimes n such that 3*n - 2 is a square.at n=44A112393
- Semiprimes in A056109.at n=23A113528
- Numerator of the coefficients of k^2 term at Sum[Sum[(i-j)^(2n),{i,1,k}],{j,1,k}].at n=5A120282
- Numerator of the coefficients of the k^2 terms of Sum[Sum[(i+j)^(2n),{i,1,k}],{j,1,k}].at n=5A120283
- Sequence relating to the 11-gon (or hendecagon).at n=8A120747
- a(0) = 1; for n > 0, a(n) = (-1)^(n+1)*B(2n)*Product_{prime p<=2n+1} p where B(2n) denotes the (2n)-th Bernoulli number.at n=6A123536
- a(n) = 15*n*(n+1) + 11.at n=22A132208
- Row sums of triangle A134464.at n=32A134465