Properties of the Number 27666

Twenty-Seven Thousand Six Hundred Sixty-Six

Basics

Value: 27665 → 27666 → 27667

Parity: even

Prime: No

Previous Prime: 27653

Next Prime: 27673

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 29 × 53

Divisors: 1, 2, 3, 6, 9, 18, 29, 53, 58, 87

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110000010010

Octal: 66022

Duodecimal: 14016

Hexadecimal: 6c12

Square: 765407556

Square Root: 166.33099530754933

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

A simple grammar: power set of pairs of sequences. A52812

Number of nXn 0..1 arrays with every element unequal to 0, 1, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. A318344

Table read by antidiagonals: T(n,k) (n >= 3, k >= 0) is the number of cells in a regular n-gon after k generations of mitosis. A350000

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. A318350

Semiprimes with distinct digits. A320969

a(n)/10000000 gives log₁₀(n) to 7 places. A27666