Properties of the Number 12663

Twelve Thousand Six Hundred Sixty-Three

Basics

Value: 12662 → 12663 → 12664

Parity: odd

Prime: No

Previous Prime: 12659

Next Prime: 12671

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 7 × 67

Divisors: 1, 3, 7, 9, 21, 27, 63, 67, 189, 201

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000101110111

Octal: 30567

Duodecimal: 73B3

Hexadecimal: 3177

Square: 160351569

Square Root: 112.52999600106631

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(n) = ∑_k=1..n k*σ(k). A143128

Expansion of 1/((1-x)*(1-x-x³)). A77868

Differences between two positive cubes in exactly 2 ways. A14440

-9-Knödel numbers. A225513

Difference between two positive cubes in more than one way. A34179

Number of partitions of n such that (greatest part) - (least part) > number of parts. A237833

Numbers that are the sum of two (possibly negative) cubes in at least 2 ways. A51347

Pisot sequence T(3,5). A20745

Positive numbers that are the sum of two (possibly negative) cubes in at least 2 ways (primitive solutions). A293647

Triangle, read by rows, of coefficients in powers of e.g.f. for A100065 such that, for each row n>=0, ∑_k=0..n T(n,k)/k! = [exp(n)] (integer floor of eⁿ). A100064