Properties of the Number 99660

Ninety-Nine Thousand Six Hundred Sixty

Basics

Value: 99659 → 99660 → 99661

Parity: even

Prime: No

Previous Prime: 99643

Next Prime: 99661

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 5 × 11 × 151

Divisors: 1, 2, 3, 4, 5, 6, 10, 11, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11000010101001100

Octal: 302514

Duodecimal: 49810

Hexadecimal: 1854c

Square: 9932115600

Square Root: 315.6897210870192

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

Coefficient of·in the reduction by x²->x+1 of the polynomial p(n,x) defined below in Comments. A192431

a(n) = 10 + floor( (1 + ∑_j=1..n-1 a(j) )/3 ). A120155

a(n) is the largest n-digit number whose last k digits are divisible by the k-th prime for k = 1..n. A211345

a(n) is the least prime following A002280[n] repdigits. A99660

Number of (n+2)X(1+2) 0..2 arrays with every consecutive three elements in every row and column having exactly 2 distinct values, in every diagonal 1 or 2 distinct values, in every antidiagonal 2 or 3 distinct values, and new values 0 upwards introduced in row major order. A252987