664025088 has 192 divisors, whose sum is σ = 1912135680. Its totient is φ = 204374016.

The previous prime is 664025029. The next prime is 664025161. The reversal of 664025088 is 880520466.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5228481 + ... + 5228607.

It is an arithmetic number, because the mean of its divisors is an integer number (9959040).

Almost surely, 2^664025088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664025088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (956067840).

664025088 is an abundant number, since it is smaller than the sum of its proper divisors (1248110592).

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

664025088 is a wasteful number, since it uses less digits than its factorization.

664025088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 664025088 is about 25768.6842504618. The cubic root of 664025088 is about 872.4251216655.

The spelling of 664025088 in words is "six hundred sixty-four million, twenty-five thousand, eighty-eight".