Properties of the Number 70805

Seventy Thousand Eight Hundred Five

Basics

Value: 70804 → 70805 → 70806

Parity: odd

Prime: No

Previous Prime: 70793

Next Prime: 70823

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 7 ² × 17 ²

Divisors: 1, 5, 7, 17, 35, 49, 85, 119, 245, 289

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001010010010101

Octal: 212225

Duodecimal: 34B85

Hexadecimal: 11495

Square: 5013348025

Square Root: 266.092089322475

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 ways to fill a matrix with the parts of a strict integer partition of n. A323301

Odd numbers k such that k divides A163511(k). A364495

n such that A205592(n) > n. A205594

Triangle T(n,k) of series-reduced (or homeomorphically irreducible) labeled graphs with n nodes and k edges, k=0..binomial(n,2). A60514

Abelian orders m for which there exist at least 4 groups of order m. A350323

Numbers k such that between k and the next prime there are gpf(k) numbers, where gpf(k) denotes the largest prime factor of k. A235425

Expansion of x*(1+2·x)/((1-2·x)*(1-x+4·x²)). A335840

a(1) = 2; a(n) = largest prime not exceeding the sum of all previous terms. A70805