Properties of the Number 16660

Sixteen Thousand Six Hundred Sixty

Basics

Value: 16659 → 16660 → 16661

Parity: even

Prime: No

Previous Prime: 16657

Next Prime: 16661

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 5 × 7 ² × 17

Divisors: 1, 2, 4, 5, 7, 10, 14, 17, 20, 28

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100000100010100

Octal: 40424

Duodecimal: 9784

Hexadecimal: 4114

Square: 277555600

Square Root: 129.07362240210043

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

Basis for code in A075928. A75929

Beastly (or hateful) numbers: numbers containing the string 666 in their decimal expansion. A51003

T(n,k) is the number of n-bead necklaces labeled with numbers -k..k allowing reversal, with sum zero and avoiding the patterns z z+1 z+2 and z z-1 z-2. A209485

T(n,k)=Number of length n+3 0..k arrays with no consecutive four elements summing to more than 2·k. A241964

Neither the unsorted prime signature of a(n) nor the negated unsorted prime signature of a(n) is unimodal. A332643

Numbers k such that the largest unitary divisor of σ(k) that is coprime with A003961(k) is also a unitary divisor of k. A351551

Number of ways to place 2 nonattacking bishops on an n X n toroidal board. A177755

Numbers that are the sum of six fourth powers in four or more ways. A345561

Numbers that are the sum of six fourth powers in exactly four ways. A345816

Number of zig-zag paths from top to bottom of a 2n-1 by 2n-1 square whose color is not that of the top right corner. A153338