Properties of the Number 8666

Eight Thousand Six Hundred Sixty-Six

Basics

Value: 8665 → 8666 → 8667

Parity: even

Prime: No

Previous Prime: 8663

Next Prime: 8669

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 7 × 619

Divisors: 1, 2, 7, 14, 619, 1238, 4333, 8666

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000111011010

Octal: 20732

Duodecimal: 5022

Hexadecimal: 21da

Square: 75099556

Square Root: 93.09135298189624

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

a(n) = 6·n² + 2 for n > 0, a(0)=1. A5897

T(n,k) is the number of n X k 0..1 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. A279977

Beastly (or hateful) numbers: numbers containing the string 666 in their decimal expansion. A51003

a(0) = 1, a(n) = 24·n² + 2 for n>0. A10014

a(0) = 1; a(n) = ∑_{0 <= k < n and gcd(k,n) = 1} a(k). A45545

Sum of distances between dual pairs of partitions of n for the canonical order. A36045

a(n) = ∑_{r = 0 to n} L(n,r), where L(n,r) (A067049) = lcm(n, n-1, n-2, ..., n-r+1)/lcm(1, 2, 3, ..., r). A61297

T(n,k)=Number of nXk 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest, modulo 4. A240381

Number of 5-ary Lyndon words of length n over Z₅ with trace 0 and subtrace 1. A74415

Number of 5-ary Lyndon words of length n over Z₅ with trace 0 and subtrace 2. A74416