664032612 has 48 divisors (see below), whose sum is σ = 1574802432. Its totient is φ = 217731360.

The previous prime is 664032571. The next prime is 664032613. The reversal of 664032612 is 216230466.

It is a self number, because there is not a number n which added to its sum of digits gives 664032612.

It is not an unprimeable number, because it can be changed into a prime (664032613) 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, 700723 + ... + 701669.

It is an arithmetic number, because the mean of its divisors is an integer number (32808384).

Almost surely, 2^664032612 is an apocalyptic number.

It is an amenable number.

664032612 is an abundant number, since it is smaller than the sum of its proper divisors (910769820).

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

664032612 is a wasteful number, since it uses less digits than its factorization.

664032612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848 (or 1846 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 664032612 is about 25768.8302412042. The cubic root of 664032612 is about 872.4284167729.

The spelling of 664032612 in words is "six hundred sixty-four million, thirty-two thousand, six hundred twelve".