Properties of the Number 6945

Six Thousand Nine Hundred Forty-Five

Basics

Value: 6944 → 6945 → 6946

Parity: odd

Prime: No

Previous Prime: 6917

Next Prime: 6947

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 463

Divisors: 1, 3, 5, 15, 463, 1389, 2315, 6945

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101100100001

Octal: 15441

Duodecimal: 4029

Hexadecimal: 1b21

Square: 48233025

Square Root: 83.33666660000267

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

Partial sums of A299258. A299264

Numbers that are the sum of 6 positive 7th powers. A3373

Coefficients in expansion of ∑_{n >= 1} xⁿ/(1-xⁿ)⁴. A59358

Total number of positive integers below 10ⁿ requiring 13 positive biquadrates in their representation as sum of biquadrates. A186671

Number of 3-covers of an unlabeled n-set. A5783

a(n) = ∑_j=0..n j·Fibonacci(j). A14286

Number of polyiamonds with 2n cells that tile the plane by translation but not by 180-degree rotation (Conway criterion). A75217

Centered 14-gonal numbers. A69127

Fundamental discriminants of real quadratic number fields with class number 10. A218160

E.g.f. satisfies A(x) = 1 + x·A(x)*exp(x·A(x)²). A364980