264497685 has 16 divisors (see below), whose sum is σ = 423456000. Its totient is φ = 140978880.

The previous prime is 264497671. The next prime is 264497711. The reversal of 264497685 is 586794462.

It is not a de Polignac number, because 264497685 - 2⁴ = 264497669 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25575 + ... + 34395.

It is an arithmetic number, because the mean of its divisors is an integer number (26466000).

Almost surely, 2^264497685 is an apocalyptic number.

It is an amenable number.

264497685 is a deficient number, since it is larger than the sum of its proper divisors (158958315).

264497685 is a wasteful number, since it uses less digits than its factorization.

264497685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10828.

The product of its digits is 2903040, while the sum is 51.

The square root of 264497685 is about 16263.3847953001. The cubic root of 264497685 is about 641.9097295464.

The spelling of 264497685 in words is "two hundred sixty-four million, four hundred ninety-seven thousand, six hundred eighty-five".