Properties of the Number 70091

Seventy Thousand Ninety-One

Basics

Value: 70090 → 70091 → 70092

Parity: odd

Prime: No

Previous Prime: 70079

Next Prime: 70099

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 7 × 17 × 19 × 31

Divisors: 1, 7, 17, 19, 31, 119, 133, 217, 323, 527

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001000111001011

Octal: 210713

Duodecimal: 3468B

Hexadecimal: 111cb

Square: 4912748281

Square Root: 264.7470490864818

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) = (1/720)*n*(n - 10)*(n - 1)*(n³ - 34·n² + 181·n - 144). A319932

Numbers k such that σ(k)/φ(k) = 16/9. A164647

Numbers n such that n and n+-1 have 4 distinct prime factors. A168628

Expansion of ∏_k>=1 (1-x^k)³¹. A10836

a(n) = a(n-1) * (11·a(n-1) - 16·a(n-2)) / (a(n-1) + 10·a(n-2)) with a(1) = 1, a(2) = 2. A247518

Tetraprimes (or products of exactly four distinct prime numbers) that are the sum of two successive tetraprimes. A380348

Number of isosceles integer triangles with perimeter n and relatively prime side lengths. A70091