Properties of the Number 66545

Sixty-Six Thousand Five Hundred Forty-Five

Basics

Value: 66544 → 66545 → 66546

Parity: odd

Prime: No

Previous Prime: 66541

Next Prime: 66553

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 5 × 13309

Divisors: 1, 5, 13309, 66545

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001111110001

Octal: 201761

Duodecimal: 32615

Hexadecimal: 103f1

Square: 4428237025

Square Root: 257.96317566660554

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

T(n,k)=Number of nXk 0..2 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 3. A239361

Positive numbers y such that y² is of the form x²+(x+16807)² with integer x. A156713

Number of spanning trees in the line graph of the product of two complete graph, each of order n, L(K_n x K_n). A66545