634688982 has 48 divisors (see below), whose sum is σ = 1461227040. Its totient is φ = 198410496.

The previous prime is 634688963. The next prime is 634689007. The reversal of 634688982 is 289886436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86119 + ... + 93197.

It is an arithmetic number, because the mean of its divisors is an integer number (30442230).

Almost surely, 2^634688982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634688982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730613520).

634688982 is an abundant number, since it is smaller than the sum of its proper divisors (826538058).

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

634688982 is a wasteful number, since it uses less digits than its factorization.

634688982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7397 (or 7394 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 634688982 is about 25193.0343944512. The cubic root of 634688982 is about 859.3834511865.

The spelling of 634688982 in words is "six hundred thirty-four million, six hundred eighty-eight thousand, nine hundred eighty-two".