674569656 has 96 divisors (see below), whose sum is σ = 1967425200. Its totient is φ = 208020480.

The previous prime is 674569633. The next prime is 674569661. The reversal of 674569656 is 656965476.

674569656 is a `hidden beast` number, since 6 + 74 + 569 + 6 + 5 + 6 = 666.

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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67546 + ... + 76886.

Almost surely, 2^674569656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674569656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (983712600).

674569656 is an abundant number, since it is smaller than the sum of its proper divisors (1292855544).

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

674569656 is a wasteful number, since it uses less digits than its factorization.

674569656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9429 (or 9422 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 54.

The square root of 674569656 is about 25972.4788189345. The cubic root of 674569656 is about 877.0188620565.

The spelling of 674569656 in words is "six hundred seventy-four million, five hundred sixty-nine thousand, six hundred fifty-six".