Properties of the Number 61638

Sixty-One Thousand Six Hundred Thirty-Eight

Basics

Value: 61637 → 61638 → 61639

Parity: even

Prime: No

Previous Prime: 61637

Next Prime: 61643

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 10273

Divisors: 1, 2, 3, 6, 10273, 20546, 30819, 61638

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111000011000110

Octal: 170306

Duodecimal: 2B806

Hexadecimal: f0c6

Square: 3799243044

Square Root: 248.27001429894833

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

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 1, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. A317436

Triangle of coefficients of polynomials v(n,x) jointly generated with A210803; see the Formula section. A210804

Number of nX3 0..1 arrays with every element unequal to 1, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. A317431

Primes p such that the greatest prime divisor of p-1 is 7. A61638