674981507808 has 96 divisors (see below), whose sum is σ = 1970777329920. Its totient is φ = 224755977600.

The previous prime is 674981507797. The next prime is 674981507831. The reversal of 674981507808 is 808705189476.

674981507808 is a `hidden beast` number, since 6 + 7 + 49 + 8 + 1 + 507 + 80 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×674981507808² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405733 + ... + 1230683.

It is an arithmetic number, because the mean of its divisors is an integer number (20528930520).

Almost surely, 2^674981507808 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 674981507808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (985388664960).

674981507808 is an abundant number, since it is smaller than the sum of its proper divisors (1295795822112).

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

674981507808 is a wasteful number, since it uses less digits than its factorization.

674981507808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825917 (or 825903 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 63.

The spelling of 674981507808 in words is "six hundred seventy-four billion, nine hundred eighty-one million, five hundred seven thousand, eight hundred eight".