634641364 has 12 divisors (see below), whose sum is σ = 1269282784. Its totient is φ = 271989144.

The previous prime is 634641361. The next prime is 634641389. The reversal of 634641364 is 463146436.

634641364 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634641361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11332854 + ... + 11332909.

Almost surely, 2^634641364 is an apocalyptic number.

It is an amenable number.

634641364 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

634641364 is a wasteful number, since it uses less digits than its factorization.

634641364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22665774 (or 22665772 counting only the distinct ones).

The product of its digits is 124416, while the sum is 37.

The square root of 634641364 is about 25192.0893139096. The cubic root of 634641364 is about 859.3619586940.

The spelling of 634641364 in words is "six hundred thirty-four million, six hundred forty-one thousand, three hundred sixty-four".