634874394 has 32 divisors (see below), whose sum is σ = 1583064576. Its totient is φ = 164902320.

The previous prime is 634874371. The next prime is 634874413. The reversal of 634874394 is 493478436.

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, 686632 + ... + 687555.

It is an arithmetic number, because the mean of its divisors is an integer number (49470768).

Almost surely, 2^634874394 is an apocalyptic number.

634874394 is an abundant number, since it is smaller than the sum of its proper divisors (948190182).

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

634874394 is a wasteful number, since it uses less digits than its factorization.

634874394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374210.

The product of its digits is 1741824, while the sum is 48.

The square root of 634874394 is about 25196.7139524185. The cubic root of 634874394 is about 859.4671270737.

The spelling of 634874394 in words is "six hundred thirty-four million, eight hundred seventy-four thousand, three hundred ninety-four".