674389656 has 24 divisors (see below), whose sum is σ = 1826472180. Its totient is φ = 224796528.

The previous prime is 674389633. The next prime is 674389673. The reversal of 674389656 is 656983476.

It is a tau number, because it is divible by the number of its divisors (24).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4683190 + ... + 4683333.

Almost surely, 2^674389656 is an apocalyptic number.

It is an amenable number.

674389656 is an abundant number, since it is smaller than the sum of its proper divisors (1152082524).

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

674389656 is a wasteful number, since it uses less digits than its factorization.

674389656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9366535 (or 9366528 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The square root of 674389656 is about 25969.0133813358. The cubic root of 674389656 is about 876.9408481518.

The spelling of 674389656 in words is "six hundred seventy-four million, three hundred eighty-nine thousand, six hundred fifty-six".