265806 has 12 divisors (see below), whose sum is σ = 575952. Its totient is φ = 88596.

The previous prime is 265787. The next prime is 265807. The reversal of 265806 is 608562.

265806 is a `hidden beast` number, since 2 + 658 + 0 + 6 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 265806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7366 + ... + 7401.

It is an arithmetic number, because the mean of its divisors is an integer number (47996).

2²⁶⁵⁸⁰⁶ is an apocalyptic number.

265806 is an abundant number, since it is smaller than the sum of its proper divisors (310146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265806 is a wasteful number, since it uses less digits than its factorization.

265806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14775 (or 14772 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 265806 is about 515.5637690917. The cubic root of 265806 is about 64.2966372974.

It can be divided in two parts, 26 and 5806, that added together give a cube (5832 = 18³).

The spelling of 265806 in words is "two hundred sixty-five thousand, eight hundred six".