Properties of the Number 66915

Sixty-Six Thousand Nine Hundred Fifteen

Basics

Value: 66914 → 66915 → 66916

Parity: odd

Prime: No

Previous Prime: 66889

Next Prime: 66919

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 1487

Divisors: 1, 3, 5, 9, 15, 45, 1487, 4461, 7435, 13383

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000010101100011

Octal: 202543

Duodecimal: 32883

Hexadecimal: 10563

Square: 4477617225

Square Root: 258.6793381775978

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

A convolution triangle of numbers obtained from A036068. A30524

a(n) = ∑_{k >= 1} floor((1+sqrt(2))^n-k). A20962

a(n) = n^φ(n) + 1. A66915