634908 has 24 divisors (see below), whose sum is σ = 1495312. Its totient is φ = 209664.

The previous prime is 634903. The next prime is 634927. The reversal of 634908 is 809436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634901) by changing a digit.

634908 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1716 + ... + 2052.

2⁶³⁴⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

634908 is an abundant number, since it is smaller than the sum of its proper divisors (860404).

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

634908 is a wasteful number, since it uses less digits than its factorization.

634908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 634908 is about 796.8111445004. The cubic root of 634908 is about 85.9482291618.

The spelling of 634908 in words is "six hundred thirty-four thousand, nine hundred eight".