Properties of the Number 66584

Sixty-Six Thousand Five Hundred Eighty-Four

Basics

Value: 66583 → 66584 → 66585

Parity: even

Prime: No

Previous Prime: 66571

Next Prime: 66587

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 7 × 29 × 41

Divisors: 1, 2, 4, 7, 8, 14, 28, 29, 41, 56

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000010000011000

Octal: 202030

Duodecimal: 32648

Hexadecimal: 10418

Square: 4433429056

Square Root: 258.0387567788994

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number T(n,k) of multisets of nonempty words with a total of n letters over k-ary alphabet such that all k letters occur at least once in the multiset; triangle T(n,k), n>=0, 0<=k<=n, read by rows. A257740

Expansion of θ series of {E₇}* lattice in powers of q^1/2. A3781

Expansion of θ series of E₇ lattice in powers of q². A4008

a(n) = a(n-1) * a(n-2) - 1. A55937

Number of multisets of nonempty words with a total of n letters over quaternary alphabet such that all letters occur at least once in the multiset. A320214

a(n) is the number of squares of side length greater than 1 having vertices at the points of an n X n grid of dots. A328152

Nonzero coefficients in θ series of {E₇}* lattice. A30443

Numbers k such that (k, φ(k), σ(k)) lies on a sphere with integral radius centered at the origin, i.e., k² + φ(k)² + σ(k)² is a square. A66785

G.f. A(x) satisfies A(x) = 1/(1 - x/(1 - x·A(x))³). A161797

Product of nonzero digits of A066553(n). A66584