664928014 has 4 divisors (see below), whose sum is σ = 997392024. Its totient is φ = 332464006.

The previous prime is 664928003. The next prime is 664928041. The reversal of 664928014 is 410829466.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166232002 + ... + 166232005.

It is an arithmetic number, because the mean of its divisors is an integer number (249348006).

Almost surely, 2^664928014 is an apocalyptic number.

664928014 is a deficient number, since it is larger than the sum of its proper divisors (332464010).

664928014 is a wasteful number, since it uses less digits than its factorization.

664928014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332464009.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 664928014 is about 25786.1981300075. The cubic root of 664928014 is about 872.8203770864.

The spelling of 664928014 in words is "six hundred sixty-four million, nine hundred twenty-eight thousand, fourteen".