Properties of the Number 66680

Sixty-Six Thousand Six Hundred Eighty

Basics

Value: 66679 → 66680 → 66681

Parity: even

Prime: No

Previous Prime: 66653

Next Prime: 66683

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 5 × 1667

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 1667, 3334

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000010001111000

Octal: 202170

Duodecimal: 32708

Hexadecimal: 10478

Square: 4446222400

Square Root: 258.22470834527047

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

Numbers k such that k and k² use only the digits 0, 2, 4, 6 and 8. A136904

Badly sieved numbers: as in the Sieve of Eratosthenes multiples of unmarked numbers p are marked, but only up to p². A66680