Properties of the Number 86565

Eighty-Six Thousand Five Hundred Sixty-Five

Basics

Value: 86564 → 86565 → 86566

Parity: odd

Prime: No

Previous Prime: 86561

Next Prime: 86573

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 29 × 199

Divisors: 1, 3, 5, 15, 29, 87, 145, 199, 435, 597

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: 10101001000100101

Octal: 251045

Duodecimal: 42119

Hexadecimal: 15225

Square: 7493499225

Square Root: 294.2193059607068

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

Place n equally spaced points around the circumference of a circle and then, for each pair of points, draw two distinct circles, whose radii are the same as the first circle, such that both points lie on their circumferences. The sequence gives the total number of vertices formed. A371373

Expansion of 1/((1-2x)(1-4x)(1-9x)(1-11x)). A25981

Smallest k such that (10^k - 1)/9 has n distinct prime divisors. Or a(n)= smallest value of k such that A000042(k) has exactly n distinct prime divisors. A86565

Number of nX3 0..1 arrays with no element equal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. A279489