Properties of the Number -7085

Eighty-Five

Basics

Value: -7086 → -7085 → -7084

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 13 × 109

Divisors: 1, 5, 13, 65, 109, 545, 1417, 7085

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -1101110101101

Octal: -15655

Duodecimal: -4125

Hexadecimal: -1bad

Square: 50197225

Square Root: 84.17244204607586

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

Moebius inversion of a sequence related to powers of 2. A178738

E.g.f. satisfies A(x) = exp( x·exp(x²) / A(x) ). A362673

Triangle read by rows: T(n,k) is the coefficient A_k in the transformation of 1 + x + x² + ... + xⁿ to the polynomial A_k*(x+3k)^k for 0 <= k <= n. A248977

a(n) = ((-4)^(p-1/4) - 1)/p, where p is the n-th prime congruent to 1 mod 4. A318898

Numbers m that are the hypotenuse of exactly 13 distinct integer-sided right triangles, i.e., m² can be written as a sum of two squares in 13 ways. A97102

Concentric 14-gonal numbers. A195145

Riordan array (1/(1-x·C(x)³), x·C(x)), C(x) the g.f. of A000108. A236830

Total number of ON cells at stage 2n of two-dimensional 5-neighbor outer totalistic cellular automaton defined by "Rule 451". A246318

a(n) = a(n-2) + a(n-5). A1687

a(n) = ceiling( ∑_i=1..n-1 a(i)/5 ), a(1)=1. A120170