Properties of the Number 99621

Ninety-Nine Thousand Six Hundred Twenty-One

Basics

Value: 99620 → 99621 → 99622

Parity: odd

Prime: No

Previous Prime: 99611

Next Prime: 99623

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 11069

Divisors: 1, 3, 9, 11069, 33207, 99621

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000010100100101

Octal: 302445

Duodecimal: 49799

Hexadecimal: 18525

Square: 9924343641

Square Root: 315.62794553081005

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 tilings of a 3 X n rectangle using dominoes and right trominoes. A165716

Number of tilings of a 10 X n rectangle using dominoes and right trominoes. A219993

Number of inequivalent ways of placing 2 nonattacking rooks on n X n board up to rotations and reflections of the board. A307304

a(n) = ∑_{k=0..floor(n/2)} binomial(n-k,k+1) * 3^n-k-1*(4/3)^k. A99621