264644165 has 16 divisors (see below), whose sum is σ = 326824320. Its totient is φ = 205571520.

The previous prime is 264644153. The next prime is 264644197. The reversal of 264644165 is 561446462.

264644165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 264644165 - 2⁶ = 264644101 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 113360 + ... + 115670.

It is an arithmetic number, because the mean of its divisors is an integer number (20426520).

Almost surely, 2^264644165 is an apocalyptic number.

It is an amenable number.

264644165 is a deficient number, since it is larger than the sum of its proper divisors (62180155).

264644165 is a wasteful number, since it uses less digits than its factorization.

264644165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972.

The product of its digits is 138240, while the sum is 38.

The square root of 264644165 is about 16267.8875395670. The cubic root of 264644165 is about 642.0282051706.

The spelling of 264644165 in words is "two hundred sixty-four million, six hundred forty-four thousand, one hundred sixty-five".