Properties of the Number 66485

Sixty-Six Thousand Four Hundred Eighty-Five

Basics

Value: 66484 → 66485 → 66486

Parity: odd

Prime: No

Previous Prime: 66467

Next Prime: 66491

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 5 × 13297

Divisors: 1, 5, 13297, 66485

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001110110101

Octal: 201665

Duodecimal: 32585

Hexadecimal: 103b5

Square: 4420255225

Square Root: 257.84685377176896

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 5·10^k + 4·R_k - 3 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A103013

Numbers whose base-3 representation has exactly 11 runs. A43591

Numbers n such that number of runs in the base 3 representation of n is congruent to 1 mod 10. A43816

Numbers n such that f(n) is a strict local extremum for the prime gaps function f(n) = prime(n+1)-prime(n), where prime(n) denotes the n-th prime; i.e., either f(n)>f(n-1) and f(n)>f(n+1) or f(n)<f(n-1) and f(n)<f(n+1). A66485