634808 has 16 divisors (see below), whose sum is σ = 1207680. Its totient is φ = 312768.

The previous prime is 634807. The next prime is 634817. The reversal of 634808 is 808436.

634808 = T₄₅₇ + T₄₅₈ + ... + T₄₆₂.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634807) 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, 41 + ... + 1127.

It is an arithmetic number, because the mean of its divisors is an integer number (75480).

2⁶³⁴⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

634808 is a deficient number, since it is larger than the sum of its proper divisors (572872).

634808 is a wasteful number, since it uses less digits than its factorization.

634808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166 (or 1162 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 634808 is about 796.7483919030. The cubic root of 634808 is about 85.9437165531.

The spelling of 634808 in words is "six hundred thirty-four thousand, eight hundred eight".