664005381176 has 32 divisors (see below), whose sum is σ = 1256753232000. Its totient is φ = 328871717856.

The previous prime is 664005381167. The next prime is 664005381239. The reversal of 664005381176 is 671183500466.

It is a self number, because there is not a number n which added to its sum of digits gives 664005381176.

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, 12933365 + ... + 12984603.

It is an arithmetic number, because the mean of its divisors is an integer number (39273538500).

Almost surely, 2^664005381176 is an apocalyptic number.

It is an amenable number.

664005381176 is a deficient number, since it is larger than the sum of its proper divisors (592747850824).

664005381176 is a wasteful number, since it uses less digits than its factorization.

664005381176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66491 (or 66487 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 664005381176 in words is "six hundred sixty-four billion, five million, three hundred eighty-one thousand, one hundred seventy-six".