6074
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 9114
- Proper Divisor Sum (Aliquot Sum)
- 3040
- 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
- 3036
- Möbius Function
- 1
- Radical
- 6074
- 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
- 62
- 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
- yes
- Odd
- no
Appears in sequences
- Number of partitions of at most n into at most 5 parts.at n=31A002622
- Numbers k such that the continued fraction for sqrt(k) has period 23.at n=21A020362
- Expansion of 1/((1-x)*(1-5*x)*(1-7*x)*(1-12*x)).at n=3A022456
- Exactly half of first a(n) terms of A022300 are 1's (not known to be infinite).at n=4A025513
- a(n) = Sum_{k=0..n-2} T(n,k) * T(n,k+2), with T given by A026615.at n=5A026958
- Offsets for the Atkin Partition Congruence theorem.at n=36A036492
- Numbers having three 8's in base 9.at n=10A043487
- Numbers whose base-3 representation contains exactly one 0 and no 1's.at n=23A044970
- Becomes prime or 4 after exactly 8 iterations of f(x) = sum of prime factors of x.at n=17A048130
- Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 23.at n=8A051988
- a(n) = 3*n^2 - 1.at n=44A080663
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, -1, 1), (-1, 0, 0), (0, 0, 1), (1, 1, -1)}.at n=9A148443
- a(n+1)-+a(n)=prime, a(n+1)*a(n)=Average of twin prime pairs, a(1)=1,a(2)=4.at n=29A154493
- Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 3,1 4,2 5,3 6,2 6,3 polyhexes in any orientation on a planar nXnXn triangular grid.at n=7A155429
- a(n) = 225*n - 1.at n=26A158227
- Partial sums of A106116.at n=34A173112
- a(n) = (n*(6*n+1)+(n+2)*(-1)^n)/2.at n=45A175828
- For the numbers n in A181408, these are the largest corresponding k such that 2^n-2^k-1 and 2^n-2^k+1 are twin primes.at n=39A181409
- Number of (n+1) X 4 0..3 arrays with every 2 X 2 subblock having nonzero determinant and commuting with every horizontal or vertical neighbor.at n=7A206338
- Square array read by antidiagonals: T(m,n) = number of ways of drawing a simple loop on an m x n rectangular lattice of dots in such a way that it touches each edge.at n=24A232103