664006884 has 24 divisors (see below), whose sum is σ = 1591224768. Its totient is φ = 215353440.

The previous prime is 664006879. The next prime is 664006891. The reversal of 664006884 is 488600466.

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, 747312 + ... + 748199.

It is an arithmetic number, because the mean of its divisors is an integer number (66301032).

Almost surely, 2^664006884 is an apocalyptic number.

It is an amenable number.

664006884 is an abundant number, since it is smaller than the sum of its proper divisors (927217884).

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

664006884 is a wasteful number, since it uses less digits than its factorization.

664006884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495555 (or 1495553 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 664006884 is about 25768.3310286095. The cubic root of 664006884 is about 872.4171491896.

The spelling of 664006884 in words is "six hundred sixty-four million, six thousand, eight hundred eighty-four".