Properties of the Number 61687

Sixty-One Thousand Six Hundred Eighty-Seven

Basics

Value: 61686 → 61687 → 61688

Parity: odd

Prime: Yes

Previous Prime: 61681

Next Prime: 61703

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 61687

Divisors: 1, 61687

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111000011110111

Octal: 170367

Duodecimal: 2B847

Hexadecimal: f0f7

Square: 3805285969

Square Root: 248.36867757428672

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

Main diagonal of A332363. A332364

Expansion of 1/(1 - ∑_k>=1 μ(k)*x^k*(1 + x^k)/(1 - x^k)³). A307075

a(n) = A306302(n)/2. A331756

Generalized Bell numbers: column 6 of A275043. A61687

Number of (n+2)X4 0..5 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order. A186173