Properties of the Number 63991

Sixty-Three Thousand Nine Hundred Ninety-One

Basics

Value: 63990 → 63991 → 63992

Parity: odd

Prime: No

Previous Prime: 63977

Next Prime: 63997

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 89 × 719

Divisors: 1, 89, 719, 63991

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1111100111110111

Octal: 174767

Duodecimal: 31047

Hexadecimal: f9f7

Square: 4094848081

Square Root: 252.96442437623517

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 connected ordered 4-element multiantichains on a labeled n-set. A94731

Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1 X 8 which is flat, i.e., with all blocks in parallel position, and symmetric after a rotation by 180 degrees. A123813

Integers k such that k + 1 has a divisor that is an anagram of k, which must have the same number of digits as k. A384597

Unitary amicable numbers. A63991