Properties of the Number 63985

Sixty-Three Thousand Nine Hundred Eighty-Five

Basics

Value: 63984 → 63985 → 63986

Parity: odd

Prime: No

Previous Prime: 63977

Next Prime: 63997

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 5 × 67 × 191

Divisors: 1, 5, 67, 191, 335, 955, 12797, 63985

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111100111110001

Octal: 174761

Duodecimal: 31041

Hexadecimal: f9f1

Square: 4094080225

Square Root: 252.95256472311166

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)=Hilltop maps: number of nXk binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..3 nXk array. A218638

T(n,k)=Hilltop maps: number of nXk binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or vertical neighbor in a random 0..3 nXk array. A218196

Hilltop maps: number of nX2 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or vertical neighbor in a random 0..3 nX2 array. A218190

Number of nX5 0..4 arrays with each element equal to the number its horizontal and vertical neighbors within one of itself. A196014

Base 6 digits are, in order, the first n terms of the periodic sequence with initial period 1,2. A37483

Partial sums of cototient sequence A051953. A63985

T(n,k) = Number of n X k 0..4 arrays with each element equal to the number of its horizontal and vertical neighbors within one of itself. A196017