664002204 has 12 divisors (see below), whose sum is σ = 1549338504. Its totient is φ = 221334064.

The previous prime is 664002193. The next prime is 664002223. The reversal of 664002204 is 402200466.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 27666747 + ... + 27666770.

It is an arithmetic number, because the mean of its divisors is an integer number (129111542).

Almost surely, 2^664002204 is an apocalyptic number.

It is an amenable number.

664002204 is an abundant number, since it is smaller than the sum of its proper divisors (885336300).

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

664002204 is a wasteful number, since it uses less digits than its factorization.

664002204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55333524 (or 55333522 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 664002204 is about 25768.2402193087. The cubic root of 664002204 is about 872.4150995513.

The spelling of 664002204 in words is "six hundred sixty-four million, two thousand, two hundred four".