664325016 has 32 divisors (see below), whose sum is σ = 1664031600. Its totient is φ = 221012480.

The previous prime is 664324981. The next prime is 664325023. The reversal of 664325016 is 610523466.

664325016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14061 + ... + 39068.

Almost surely, 2^664325016 is an apocalyptic number.

It is an amenable number.

664325016 is an abundant number, since it is smaller than the sum of its proper divisors (999706584).

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

664325016 is a wasteful number, since it uses less digits than its factorization.

664325016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53659 (or 53655 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 664325016 is about 25774.5032153871. The cubic root of 664325016 is about 872.5564547231.

The spelling of 664325016 in words is "six hundred sixty-four million, three hundred twenty-five thousand, sixteen".