Properties of the Number -66664

Sixty-Six Thousand Six Hundred Sixty-Four

Basics

Value: -66665 → -66664 → -66663

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ³ × 13 × 641

Divisors: 1, 2, 4, 8, 13, 26, 52, 104, 641, 1282

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10000010001101000

Octal: -202150

Duodecimal: -326B4

Hexadecimal: -10468

Square: 4444088896

Square Root: 258.1937257177254

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

5-almost primes with semiprime digits (digits 4, 6, 9 only). A111697

Numbers having four 6's in base 10. A43516

Numbers n such that every digit of both n and n² contains a loop (only digits 0,4,6,8,9 in n and n²). A107626

Number of bounded polygonal regions formed by drawing all least squares regression lines fitted to n points (j,y_j), 0 <= j < n, where each y_j is 0 or 1. A371439

Low temperature antiferromagnetic susceptibility for square lattice. A7215

Numbers k such that k and k² use only the digits 0, 4, 6, 8 and 9. A136956

For k in {2,3,...,9} define a sequence as follows: a(0)=0; for n>=0, a(n+1)=a(n)+1, unless a(n) ends in k, in which case a(n+1) is obtained by replacing the last digit of a(n) with the digit(s) of k². This is k(8). A237345

Number of ways of getting (at least) 5 of a kind, a straight flush, flush, 4 of a kind, full house, straight, 3 of a kind, 2 pair, a pair in wild-card poker with deuces wild. A57802