Properties of the Number 26705

Twenty-Six Thousand Seven Hundred Five

Basics

Value: 26704 → 26705 → 26706

Parity: odd

Prime: No

Previous Prime: 26701

Next Prime: 26711

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 7 ² × 109

Divisors: 1, 5, 7, 35, 49, 109, 245, 545, 763, 3815

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110100001010001

Octal: 64121

Duodecimal: 13555

Hexadecimal: 6851

Square: 713157025

Square Root: 163.41664541900252

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 n such that n!3 - 3 is prime, where n!3 = n!!! is a triple factorial number (A007661). A242994

a(n) = ∑_k=0..n floor(sqrt(k))⁵. A363499

a(n) = 36·n² - 55·n + 21. A157262

Number of permutations of 1..n with displacements restricted to {-6,-5,-4,-3,-2,0,1}. A189593

Generalized sum of divisors function: third diagonal of A060044. A60045

The continued fraction of the constant r > sqrt(3) such that the partial quotients equal the integer floor of the powers of r. A227233

Number of independent vertex sets and vertex covers in the n-Keller graph. A284854

Convolution of Fibonacci F(n+1), n>=0, with F(n+5), n>=0. A67333

Alternating three ratio switched sequence based on characteristic root of A000931. A108169

Table read by antidiagonals: Place k points in general position on each side of a regular n-gon and join every pair of the n*(k+1) boundary points by a chord; T(n,k) (n >= 3, k >= 0) gives number of regions in the resulting planar graph. A366253