674489664 has 84 divisors (see below), whose sum is σ = 2035088640. Its totient is φ = 212993280.

The previous prime is 674489657. The next prime is 674489677. The reversal of 674489664 is 466984476.

It is a self number, because there is not a number n which added to its sum of digits gives 674489664.

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, 19872 + ... + 41759.

Almost surely, 2^674489664 is an apocalyptic number.

674489664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

674489664 is an abundant number, since it is smaller than the sum of its proper divisors (1360598976).

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

674489664 is a wasteful number, since it uses less digits than its factorization.

674489664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61668 (or 61655 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The square root of 674489664 is about 25970.9388355523. The cubic root of 674489664 is about 876.9841943908.

The spelling of 674489664 in words is "six hundred seventy-four million, four hundred eighty-nine thousand, six hundred sixty-four".