264591 has 6 divisors (see below), whose sum is σ = 382200. Its totient is φ = 176388.

The previous prime is 264581. The next prime is 264599. The reversal of 264591 is 195462.

It is not a de Polignac number, because 264591 - 2⁵ = 264559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264599) 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, 14691 + ... + 14708.

It is an arithmetic number, because the mean of its divisors is an integer number (63700).

2²⁶⁴⁵⁹¹ is an apocalyptic number.

264591 is a deficient number, since it is larger than the sum of its proper divisors (117609).

264591 is a wasteful number, since it uses less digits than its factorization.

264591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29405 (or 29402 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 264591 is about 514.3840977324. The cubic root of 264591 is about 64.1985209430.

The spelling of 264591 in words is "two hundred sixty-four thousand, five hundred ninety-one".