264915660 has 48 divisors (see below), whose sum is σ = 745639776. Its totient is φ = 70275072.

The previous prime is 264915659. The next prime is 264915661. The reversal of 264915660 is 66519462.

It is an interprime number because it is at equal distance from previous prime (264915659) and next prime (264915661).

It is not an unprimeable number, because it can be changed into a prime (264915661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142 + ... + 23018.

It is an arithmetic number, because the mean of its divisors is an integer number (15534162).

Almost surely, 2^264915660 is an apocalyptic number.

264915660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264915660 is an abundant number, since it is smaller than the sum of its proper divisors (480724116).

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

264915660 is a wasteful number, since it uses less digits than its factorization.

264915660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23082 (or 23080 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 264915660 is about 16276.2299074448. The cubic root of 264915660 is about 642.2476795919.

The spelling of 264915660 in words is "two hundred sixty-four million, nine hundred fifteen thousand, six hundred sixty".