Properties of the Number -668778

Six Hundred Sixty-Eight Thousand Seven Hundred Seventy-Eight

Basics

Value: -668779 → -668778 → -668777

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 42

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 11 × 10133

Divisors: 1, 2, 3, 6, 11, 22, 33, 66, 10133, 20266

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10100011010001101010

Octal: -2432152

Duodecimal: -283036

Hexadecimal: -a346a

Square: 447264013284

Square Root: 817.7884812101477

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

The number of permutations of {1,1,1,2,2,2,...,n,n,n} such that each triple of k's (k=1..n) is equally spaced with b(k) other elements in between and b(1) >= b(2) >= ... >= b(n). A332748

Square array T(n,k), n >= 0, k >= 2, read by antidiagonals, where T(n,k) is the number of permutations of {k 1's, k 2's, ..., k n's} with the property that j's are equally spaced for j=1..n and the interval of j+1 is less than or equal to the interval of j for j=1..n-1. A332762