664722714 has 32 divisors (see below), whose sum is σ = 1425833280. Its totient is φ = 205949952.

The previous prime is 664722703. The next prime is 664722731. The reversal of 664722714 is 417227466.

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, 48967 + ... + 61050.

It is an arithmetic number, because the mean of its divisors is an integer number (44557290).

Almost surely, 2^664722714 is an apocalyptic number.

664722714 is an abundant number, since it is smaller than the sum of its proper divisors (761110566).

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

664722714 is a wasteful number, since it uses less digits than its factorization.

664722714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110094.

The product of its digits is 112896, while the sum is 39.

The square root of 664722714 is about 25782.2170109554. The cubic root of 664722714 is about 872.7305385551.

The spelling of 664722714 in words is "six hundred sixty-four million, seven hundred twenty-two thousand, seven hundred fourteen".