634687074 has 24 divisors (see below), whose sum is σ = 1571606400. Its totient is φ = 181339128.

The previous prime is 634687063. The next prime is 634687111. The reversal of 634687074 is 470786436.

634687074 is a `hidden beast` number, since 634 + 6 + 8 + 7 + 0 + 7 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2518474 + ... + 2518725.

It is an arithmetic number, because the mean of its divisors is an integer number (65483600).

Almost surely, 2^634687074 is an apocalyptic number.

634687074 is an abundant number, since it is smaller than the sum of its proper divisors (936919326).

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

634687074 is a wasteful number, since it uses less digits than its factorization.

634687074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5037214 (or 5037211 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The square root of 634687074 is about 25192.9965268128. The cubic root of 634687074 is about 859.3825900271.

The spelling of 634687074 in words is "six hundred thirty-four million, six hundred eighty-seven thousand, seventy-four".