Properties of the Number 66540

Sixty-Six Thousand Five Hundred Forty

Basics

Value: 66539 → 66540 → 66541

Parity: even

Prime: No

Previous Prime: 66533

Next Prime: 66541

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 5 × 1109

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000001111101100

Octal: 201754

Duodecimal: 32610

Hexadecimal: 103ec

Square: 4427571600

Square Root: 257.95348417883406

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

Sum of absolute values of coefficients of expansion of (1-x)(1-x²)(1-x³)...(1-xⁿ). A61553

The first of two consecutive primes with equal digital sums. A66540