Properties of the Number 27691

Twenty-Seven Thousand Six Hundred Ninety-One

Basics

Value: 27690 → 27691 → 27692

Parity: odd

Prime: Yes

Previous Prime: 27689

Next Prime: 27697

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 27691

Divisors: 1, 27691

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110000101011

Octal: 66053

Duodecimal: 14037

Hexadecimal: 6c2b

Square: 766791481

Square Root: 166.40612969479218

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

Primes of the form 2·n² + 58·n + 27. A217498

Number of n X 4 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 1 0 vertically. A207107

Primes p such that p-2 and q are primes, where q is concatenation of binary representations of p and p-2: q = p·2^L + p-2, where L is the length of binary representation of p-2: L=A070939(p-2). A232237

Numbers k such that sum of digits of k = sum of digits of anti-divisors of k. A213239

Primes p such that both 2p-1 and 2p²-2p+1 are prime. A274609

Number of decimal digits in the numerator of the 10ⁿ-th Bernoulli number. A103233

Primes such that applying "reverse and add" twice produces two more primes. A174402

Primes which become squares when the digits are rotated once to the right. A234925

Primes p such that the sum of cubes of the 4 consecutive primes starting with p is twice a prime. A368637

Number of cyclic edge cuts in the n-antiprism graph. A378310