664675614 has 24 divisors (see below), whose sum is σ = 1442979720. Its totient is φ = 221120208.

The previous prime is 664675589. The next prime is 664675699. The reversal of 664675614 is 416576466.

It is a self number, because there is not a number n which added to its sum of digits gives 664675614.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27112 + ... + 45435.

It is an arithmetic number, because the mean of its divisors is an integer number (60124155).

Almost surely, 2^664675614 is an apocalyptic number.

664675614 is an abundant number, since it is smaller than the sum of its proper divisors (778304106).

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

664675614 is a wasteful number, since it uses less digits than its factorization.

664675614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73064 (or 73061 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 664675614 is about 25781.3035744898. The cubic root of 664675614 is about 872.7099251583.

The spelling of 664675614 in words is "six hundred sixty-four million, six hundred seventy-five thousand, six hundred fourteen".