Properties of the Number 66985

Sixty-Six Thousand Nine Hundred Eighty-Five

Basics

Value: 66984 → 66985 → 66986

Parity: odd

Prime: No

Previous Prime: 66977

Next Prime: 67003

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 5 × 13397

Divisors: 1, 5, 13397, 66985

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000010110101001

Octal: 202651

Duodecimal: 32921

Hexadecimal: 105a9

Square: 4486990225

Square Root: 258.81460546112925

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 meanders (walks starting at the origin and ending at any altitude >= 0 that may touch but never go below the x-axis) with n steps from {-3,-2,-1,1,2,3}. A278398

Markoff spectrum N²(λ). A293174

Expansion of (1/(1-x))*sum(k>=2,x^k/(1-2x^k)). A113240

Reflective numbers: k such that the decimal encoding of the prime factorization of k (A067599) is palindromic. A66985