634684 has 12 divisors (see below), whose sum is σ = 1122408. Its totient is φ = 314000.

The previous prime is 634681. The next prime is 634687. The reversal of 634684 is 486436.

It is an interprime number because it is at equal distance from previous prime (634681) and next prime (634687).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634681) 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, 382 + ... + 1189.

It is an arithmetic number, because the mean of its divisors is an integer number (93534).

2⁶³⁴⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

634684 is a deficient number, since it is larger than the sum of its proper divisors (487724).

634684 is a wasteful number, since it uses less digits than its factorization.

634684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676 (or 1674 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 634684 is about 796.6705718175. The cubic root of 634684 is about 85.9381202600.

The spelling of 634684 in words is "six hundred thirty-four thousand, six hundred eighty-four".