634997974 has 64 divisors (see below), whose sum is σ = 1158312960. Its totient is φ = 257886720.

The previous prime is 634997939. The next prime is 634997999. The reversal of 634997974 is 479799436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 696579 + ... + 697489.

It is an arithmetic number, because the mean of its divisors is an integer number (18098640).

Almost surely, 2^634997974 is an apocalyptic number.

634997974 is a deficient number, since it is larger than the sum of its proper divisors (523314986).

634997974 is a wasteful number, since it uses less digits than its factorization.

634997974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045.

The product of its digits is 10287648, while the sum is 58.

The square root of 634997974 is about 25199.1661369975. The cubic root of 634997974 is about 859.5228893146.

The spelling of 634997974 in words is "six hundred thirty-four million, nine hundred ninety-seven thousand, nine hundred seventy-four".