664301252 has 12 divisors (see below), whose sum is σ = 1164060156. Its totient is φ = 331712640.

The previous prime is 664301221. The next prime is 664301269. The reversal of 664301252 is 252103466.

664301252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 332114176 + 332187076 = 18224^2 + 18226^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106073 + ... + 112160.

It is an arithmetic number, because the mean of its divisors is an integer number (97005013).

Almost surely, 2^664301252 is an apocalyptic number.

It is an amenable number.

664301252 is a deficient number, since it is larger than the sum of its proper divisors (499758904).

664301252 is a wasteful number, since it uses less digits than its factorization.

664301252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218998 (or 218996 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 664301252 is about 25774.0422130484. The cubic root of 664301252 is about 872.5460503386.

The spelling of 664301252 in words is "six hundred sixty-four million, three hundred one thousand, two hundred fifty-two".