634345628 has 48 divisors (see below), whose sum is σ = 1337925120. Its totient is φ = 257079744.

The previous prime is 634345619. The next prime is 634345637. The reversal of 634345628 is 826543436.

It is an interprime number because it is at equal distance from previous prime (634345619) and next prime (634345637).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 522350 + ... + 523562.

It is an arithmetic number, because the mean of its divisors is an integer number (27873440).

Almost surely, 2^634345628 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634345628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (668962560).

634345628 is an abundant number, since it is smaller than the sum of its proper divisors (703579492).

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

634345628 is a wasteful number, since it uses less digits than its factorization.

634345628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226 (or 2224 counting only the distinct ones).

The product of its digits is 414720, while the sum is 41.

The square root of 634345628 is about 25186.2190096092. The cubic root of 634345628 is about 859.2284535003.

The spelling of 634345628 in words is "six hundred thirty-four million, three hundred forty-five thousand, six hundred twenty-eight".