264985 has 16 divisors (see below), whose sum is σ = 372096. Its totient is φ = 177408.

The previous prime is 264977. The next prime is 264991. The reversal of 264985 is 589462.

264985 = 58² + 59² + ... + 99².

It is a happy number.

It is not a de Polignac number, because 264985 - 2³ = 264977 is a prime.

It is a Duffinian number.

Its product of digits (17280) is a multiple of the sum of its prime divisors (192).

It is a self number, because there is not a number n which added to its sum of digits gives 264985.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2289 + ... + 2401.

It is an arithmetic number, because the mean of its divisors is an integer number (23256).

2²⁶⁴⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

264985 is a deficient number, since it is larger than the sum of its proper divisors (107111).

264985 is a wasteful number, since it uses less digits than its factorization.

264985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192.

The product of its digits is 17280, while the sum is 34.

The square root of 264985 is about 514.7669375552. The cubic root of 264985 is about 64.2303709461.

The spelling of 264985 in words is "two hundred sixty-four thousand, nine hundred eighty-five".