Properties of the Number 85691

Eighty-Five Thousand Six Hundred Ninety-One

Basics

Value: 85690 → 85691 → 85692

Parity: odd

Prime: Yes

Previous Prime: 85669

Next Prime: 85703

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 85691

Divisors: 1, 85691

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100111010111011

Octal: 247273

Duodecimal: 4170B

Hexadecimal: 14ebb

Square: 7342947481

Square Root: 292.73025125531524

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) = numerator of sum{k=1 to n} 1/A127515(k). A127516

Primes which are the sum of 6 consecutive triangular numbers A000217. A159071

Sophie Germain primes in A154939. A154941

Triangle read by rows: T(n,k) is the number of triangles of side k in triangular matchstick arrangement of side n; n>=1 and k>=1. A85691