264587 has 4 divisors (see below), whose sum is σ = 271776. Its totient is φ = 257400.

The previous prime is 264581. The next prime is 264599. The reversal of 264587 is 785462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 264587 - 2⁸ = 264331 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 264587.

It is not an unprimeable number, because it can be changed into a prime (264581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3539 + ... + 3612.

It is an arithmetic number, because the mean of its divisors is an integer number (67944).

2²⁶⁴⁵⁸⁷ is an apocalyptic number.

264587 is a deficient number, since it is larger than the sum of its proper divisors (7189).

264587 is an equidigital number, since it uses as much as digits as its factorization.

264587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7188.

The product of its digits is 13440, while the sum is 32.

The square root of 264587 is about 514.3802095726. The cubic root of 264587 is about 64.1981974307.

The spelling of 264587 in words is "two hundred sixty-four thousand, five hundred eighty-seven".