Properties of the Number 86

Eighty-Six

Basics

Value: 85 → 86 → 87

Parity: even

Prime: No

Previous Prime: 83

Next Prime: 89

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 43

Divisors: 1, 2, 43, 86

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010110

Octal: 126

Duodecimal: 72

Hexadecimal: 56

Square: 7396

Square Root: 9.273618495495704

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

Squarefree numbers: numbers that are not divisible by a square greater than 1. A5117

Semiprimes (or biprimes): products of two primes. A1358

The composite numbers: numbers n of the form x·y for x > 1 and y > 1. A2808

The nonnegative even numbers: a(n) = 2n. A5843

Read n backwards (referred to as R(n) in many sequences). A4086

Squarefree semiprimes: Numbers that are the product of two distinct primes. A6881

The nonprime numbers: 1 together with the composite numbers, A002808. A18252

Evil numbers: nonnegative integers with an even number of 1's in their binary expansion. A1969

Numbers that are not powers of primes p^k (k >= 0); complement of A000961. A24619

Number of plane partitions (or planar partitions) of n. A219

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