634402164 has 24 divisors (see below), whose sum is σ = 1614842208. Its totient is φ = 192243040.

The previous prime is 634402159. The next prime is 634402199. The reversal of 634402164 is 461204436.

It is a super-2 number, since 2×634402164² = 804932211375765792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2402907 + ... + 2403170.

It is an arithmetic number, because the mean of its divisors is an integer number (67285092).

Almost surely, 2^634402164 is an apocalyptic number.

It is an amenable number.

634402164 is an abundant number, since it is smaller than the sum of its proper divisors (980440044).

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

634402164 is a wasteful number, since it uses less digits than its factorization.

634402164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4806095 (or 4806093 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 634402164 is about 25187.3413444135. The cubic root of 634402164 is about 859.2539789629.

The spelling of 634402164 in words is "six hundred thirty-four million, four hundred two thousand, one hundred sixty-four".