Properties of the Number 78706

Seventy-Eight Thousand Seven Hundred Six

Basics

Value: 78705 → 78706 → 78707

Parity: even

Prime: No

Previous Prime: 78697

Next Prime: 78707

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 23 × 29 × 59

Divisors: 1, 2, 23, 29, 46, 58, 59, 118, 667, 1334

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011001101110010

Octal: 231562

Duodecimal: 3966A

Hexadecimal: 13372

Square: 6194634436

Square Root: 280.5458964233838

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

Numbers k such that 2^k + 25 is prime. A157006

Expansion of (1+3·x+9·x²+9·x³+9·x⁴+3·x⁵+x⁶) /( (1+x)² * (1-x)⁵ ). A175898

a(n) = (35·n⁴ - 35·n³ + 55·n² - 25·n + 6)/6. A181343

Triangle read by rows: T(n,k) is the number of weighted lattice paths in L_n having k returns to the horizontal axis (both from above and below). The members of L_n are paths of weight n that start at (0,0) , end on the horizontal axis and whose steps are of the following four kinds: an (1,0)-step with weight 1, an (1,0)-step with weight 2, a (1,1)-step with weight 2, and a (1,-1)-step with weight 1. The weight of a path is the sum of the weights of its steps. A182898

a(n) = smallest integer >=a(n-1) such that sum of first n terms is prime. A78706