664245952 has 28 divisors (see below), whose sum is σ = 1319078896. Its totient is φ = 331879680.

The previous prime is 664245949. The next prime is 664246001. The reversal of 664245952 is 259542466.

664245952 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 664245899 and 664245908.

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, 111202 + ... + 117022.

Almost surely, 2^664245952 is an apocalyptic number.

It is an amenable number.

664245952 is a deficient number, since it is larger than the sum of its proper divisors (654832944).

664245952 is a wasteful number, since it uses less digits than its factorization.

664245952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7616 (or 7606 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

The square root of 664245952 is about 25772.9694059493. The cubic root of 664245952 is about 872.5218378620.

The spelling of 664245952 in words is "six hundred sixty-four million, two hundred forty-five thousand, nine hundred fifty-two".