634992 has 20 divisors (see below), whose sum is σ = 1640520. Its totient is φ = 211648.

The previous prime is 634979. The next prime is 635003. The reversal of 634992 is 299436.

It is a congruent number.

It is an unprimeable number.

634992 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 3 ways as a sum of consecutive naturals, for example, 6567 + ... + 6662.

It is an arithmetic number, because the mean of its divisors is an integer number (82026).

2⁶³⁴⁹⁹² is an apocalyptic number.

It is an amenable number.

634992 is an abundant number, since it is smaller than the sum of its proper divisors (1005528).

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

634992 is a wasteful number, since it uses less digits than its factorization.

634992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13240 (or 13234 counting only the distinct ones).

The product of its digits is 11664, while the sum is 33.

The square root of 634992 is about 796.8638528632. The cubic root of 634992 is about 85.9520193870.

It can be divided in two parts, 6349 and 92, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 634992 in words is "six hundred thirty-four thousand, nine hundred ninety-two".