Properties of the Number 27661

Twenty-Seven Thousand Six Hundred Sixty-One

Basics

Value: 27660 → 27661 → 27662

Parity: odd

Prime: No

Previous Prime: 27653

Next Prime: 27673

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 139 × 199

Divisors: 1, 139, 199, 27661

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110110000001101

Octal: 66015

Duodecimal: 14011

Hexadecimal: 6c0d

Square: 765130921

Square Root: 166.3159643570033

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 non-isomorphic multiset partitions of weight n with at least one endpoint. A330058

Semiprimes whose prime factors are of equal binary length and which differ from each other in exactly three bit positions. A261075

Odd composite integers m such that A000032(3·m-J(m,5)) == 3·J(m,5) (mod m), where J(m,5) is the Jacobi symbol. A339724

G.f. satisfies: A(x) = 1 + x*∑_n>=0 (A(x)⁴ - 1)ⁿ. A192947

Fractional part of decimal expansion of sqrt(n) to 3 places. A27661

Number of length n+4 0..2 arrays with at most two downsteps in every n consecutive neighbor pairs. A255626