Properties of the Number 11639

Eleven Thousand Six Hundred Thirty-Nine

Basics

Value: 11638 → 11639 → 11640

Parity: odd

Prime: No

Previous Prime: 11633

Next Prime: 11657

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 103 × 113

Divisors: 1, 103, 113, 11639

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110101110111

Octal: 26567

Duodecimal: 689B

Hexadecimal: 2d77

Square: 135466321

Square Root: 107.88419717456306

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 positive subset sums of strict integer partitions of n. A284640

Number of integer partitions of n without any three parts (a,b,c) (repeats allowed) satisfying a + b = c. A variation of sum-free partitions. A364345

a(n) = pq + pr + qr with p = prime(n), q = prime(n+1), and r = prime(n+2). A127345

Number of pairwise coprime strict compositions of n, where a singleton is always considered coprime. A337562

a(n) = ∑_d∣n φ(d³). A68963

Composites in A127345. A127347

a(n) = n³ - n² + 1. A100104

a(n) = prime(n)*prime(n+3). A90090

S₉ sequence in partition of integers > 1 described in A240521. A240536

Sequence of pairwise relatively prime numbers of class P₆ (see comment in A275246). A275251