664917108 has 48 divisors (see below), whose sum is σ = 1565491200. Its totient is φ = 219646944.

The previous prime is 664917101. The next prime is 664917151. The reversal of 664917108 is 801719466.

664917108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×664917108² = 884229521022167328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 664917108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664917101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 914241 + ... + 914967.

It is an arithmetic number, because the mean of its divisors is an integer number (32614400).

Almost surely, 2^664917108 is an apocalyptic number.

It is an amenable number.

664917108 is an abundant number, since it is smaller than the sum of its proper divisors (900574092).

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

664917108 is a wasteful number, since it uses less digits than its factorization.

664917108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316 (or 1314 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 664917108 is about 25785.9866594241. The cubic root of 664917108 is about 872.8156051257.

The spelling of 664917108 in words is "six hundred sixty-four million, nine hundred seventeen thousand, one hundred eight".