674758656 has 240 divisors, whose sum is σ = 2290087800. Its totient is φ = 188743680.

The previous prime is 674758627. The next prime is 674758661. The reversal of 674758656 is 656857476.

674758656 is a `hidden beast` number, since 6 + 7 + 4 + 7 + 586 + 56 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51904506 + ... + 51904518.

Almost surely, 2^674758656 is an apocalyptic number.

674758656 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674758656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1145043900).

674758656 is an abundant number, since it is smaller than the sum of its proper divisors (1615329144).

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

674758656 is an equidigital number, since it uses as much as digits as its factorization.

674758656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 29 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The square root of 674758656 is about 25976.1170308420. The cubic root of 674758656 is about 877.1007617216.

The spelling of 674758656 in words is "six hundred seventy-four million, seven hundred fifty-eight thousand, six hundred fifty-six".