634921074 has 12 divisors (see below), whose sum is σ = 1375662366. Its totient is φ = 211640352.

The previous prime is 634921069. The next prime is 634921103. The reversal of 634921074 is 470129436.

634921074 is a `hidden beast` number, since 63 + 492 + 107 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 619263225 + 15657849 = 24885^2 + 3957^2 .

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17636679 + ... + 17636714.

Almost surely, 2^634921074 is an apocalyptic number.

634921074 is an abundant number, since it is smaller than the sum of its proper divisors (740741292).

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

634921074 is a wasteful number, since it uses less digits than its factorization.

634921074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35273401 (or 35273398 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 634921074 is about 25197.6402466580. The cubic root of 634921074 is about 859.4881910525.

The spelling of 634921074 in words is "six hundred thirty-four million, nine hundred twenty-one thousand, seventy-four".