634311408 has 40 divisors (see below), whose sum is σ = 1653965568. Its totient is φ = 209459392.

The previous prime is 634311407. The next prime is 634311437. The reversal of 634311408 is 804113436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634311401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56616 + ... + 66887.

Almost surely, 2^634311408 is an apocalyptic number.

It is an amenable number.

634311408 is an abundant number, since it is smaller than the sum of its proper divisors (1019654160).

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

634311408 is a wasteful number, since it uses less digits than its factorization.

634311408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123621 (or 123615 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 634311408 is about 25185.5396606862. The cubic root of 634311408 is about 859.2130027612.

The spelling of 634311408 in words is "six hundred thirty-four million, three hundred eleven thousand, four hundred eight".