14666
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 22002
- Proper Divisor Sum (Aliquot Sum)
- 7336
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 7332
- Möbius Function
- 1
- Radical
- 14666
- 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
- 45
- 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 polygons of length 4n on L-lattice.at n=9A006782
- Numbers k such that the continued fraction for sqrt(k) has period 47.at n=20A020386
- Beastly (or hateful) numbers: numbers containing the string 666 in their decimal expansion.at n=23A051003
- Numbers k such that A098572(k) - A098572(k-1) = 2.at n=46A133497
- Triangle of 4 - restricted Eulerian numbers as polynomials used in exponential data smoothing: m(p,k,x)=((-1)^k*(1 - x)^(p + k)/(k!(p - 1)!))*Sum[(p - 1 + j)!*j^k*x^j/(j!), {j, 0, Infinity}]/x;n=6; t(m,l)=coefficients((-1)^m*m!*M[n, m, x])/n.at n=23A152249
- Numbers k such that (2^k + 3)^2 - 8 is prime.at n=33A188936
- Number of nX6 0..3 arrays with no element less than a strict majority of its horizontal and antidiagonal neighbors.at n=1A231837
- T(n,k)=Number of nXk 0..3 arrays with no element less than a strict majority of its horizontal and antidiagonal neighbors.at n=22A231839
- Number of 2Xn 0..3 arrays with no element less than a strict majority of its horizontal and antidiagonal neighbors.at n=5A231840
- The 360 degree spoke (or ray) of a hexagonal spiral of Ulam.at n=35A244803
- a(n) = ( 2*n*(2*n^2 + 11*n + 26) - (-1)^n + 1 )/16.at n=37A256666
- Indices of primes in A027998.at n=28A285224
- Number of ordered set partitions of [n] into two blocks such that equal-sized blocks are ordered with increasing least elements.at n=12A285917
- a(n) = Sum_{k=1..n} k^2*tau_3(k), where tau_3 is A007425.at n=16A319088
- a(n) = number of nonempty subsets of {1,2,...,n} having a partition into two subsets with the same sum of elements.at n=14A357212
- Number of integer partitions of n with some part that can be written as a nonnegative linear combination of the other distinct parts.at n=35A365068