3695
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 4440
- Proper Divisor Sum (Aliquot Sum)
- 745
- 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
- 2952
- Möbius Function
- 1
- Radical
- 3695
- 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
- 206
- 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
- Let A(n) = #{(i,j,k): i^2 + j^2 + k^2 <= n}, V(n) = (4/3)*Pi*n^(3/2), P(n) = A(n) - V(n); A000092 gives values of n where |P(n)| sets a new record; sequence gives A(A000092(n)).at n=10A000413
- Coordination sequence T2 for Zeolite Code AET.at n=42A008008
- Expansion of cos(log(1+x))/exp(x).at n=7A009027
- a(n) = Sum_{k=0..n-1} T(n,k) * T(n,2n-k), with T given by A027023.at n=6A027042
- Expansion of Product_{m>=1} ((1+q^(2*m-1))/(1+q^(2*m)))^7.at n=14A029844
- "Sloping binary representation" of Lucas numbers (A000032), slope = +1.at n=5A037094
- Numbers having three 5's in base 9.at n=5A043475
- Generation indices to 'Prime last odd terms' of sequence A048458.at n=25A048459
- a(n) is the number of forests with n nodes of rooted unlabeled identity trees.at n=13A052843
- Closed 3-dimensional ball numbers (version 1): a(n)= number of integer points (i,j,k) contained in a closed ball of diameter n, centered at (0,0,0).at n=19A053591
- Open 3-dimensional ball numbers (version 1): a(n) is the number of integer points (i,j,k) contained in an open ball of diameter n, centered at (0,0,0).at n=19A053592
- Numbers n such that n, n-1 and n-2 have the same prime signature.at n=42A086337
- Triangle, read by rows, that transforms the (n+m)-dimensional partitions of n into the (n+m+1)-dimensional partitions of n, for fixed m.at n=37A096801
- Column 1 of triangle A096801, which transforms the (n+m)-dimensional partitions of n into the (n+m+1)-dimensional partitions of n, for any fixed m.at n=7A096803
- Indices of primes in sequence defined by A(0) = 93, A(n) = 10*A(n-1) + 13 for n > 0.at n=6A101007
- Positive integers i for which A112049(i) == 6.at n=21A112066
- a(n) = Sum_{k=1..n} J_4(k)/240.at n=16A115003
- Numbers n such that n, n-1 and n-2 are semiprimes.at n=40A115393
- The number of n-almost primes less than or equal to 12^n, starting with a(0)=1.at n=4A116431
- Number of isomorphism classes of linking pairings on finite Abelian 2-groups of fixed order 2^n.at n=16A122555