664204192 has 24 divisors (see below), whose sum is σ = 1324209600. Its totient is φ = 327897024.

The previous prime is 664204111. The next prime is 664204193. The reversal of 664204192 is 291402466.

It is not an unprimeable number, because it can be changed into a prime (664204193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128842 + ... + 133897.

It is an arithmetic number, because the mean of its divisors is an integer number (55175400).

Almost surely, 2^664204192 is an apocalyptic number.

It is an amenable number.

664204192 is a deficient number, since it is larger than the sum of its proper divisors (660005408).

664204192 is a wasteful number, since it uses less digits than its factorization.

664204192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262828 (or 262820 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 664204192 is about 25772.1592420969. The cubic root of 664204192 is about 872.5035528299.

The spelling of 664204192 in words is "six hundred sixty-four million, two hundred four thousand, one hundred ninety-two".