Properties of the Number 66170

Sixty-Six Thousand One Hundred Seventy

Basics

Value: 66169 → 66170 → 66171

Parity: even

Prime: No

Previous Prime: 66169

Next Prime: 66173

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 13 × 509

Divisors: 1, 2, 5, 10, 13, 26, 65, 130, 509, 1018

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001001111010

Octal: 201172

Duodecimal: 32362

Hexadecimal: 1027a

Square: 4378468900

Square Root: 257.2353008434107

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

Number of triangles larger than size=1 in a matchstick-made hexagon with side length n. A307253

Numbers which are the sum of two squared primes in exactly three ways (ignoring order). A226562

Triangle read by rows: T(n,k) = (-1)ⁿ*(-1)^floor(3·k/2)*binomial(floor((n+k)/2),k), 0 <= k <= n, n >= 0. A66170