634490874 has 32 divisors (see below), whose sum is σ = 1448091840. Its totient is φ = 205780176.

The previous prime is 634490873. The next prime is 634490887. The reversal of 634490874 is 478094436.

634490874 is a `hidden beast` number, since 634 + 4 + 9 + 0 + 8 + 7 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (634490873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156784 + ... + 160779.

It is an arithmetic number, because the mean of its divisors is an integer number (45252870).

Almost surely, 2^634490874 is an apocalyptic number.

634490874 is an abundant number, since it is smaller than the sum of its proper divisors (813600966).

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

634490874 is a wasteful number, since it uses less digits than its factorization.

634490874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317611 (or 317605 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 634490874 is about 25189.1022865048. The cubic root of 634490874 is about 859.2940276220.

The spelling of 634490874 in words is "six hundred thirty-four million, four hundred ninety thousand, eight hundred seventy-four".