634526646 has 16 divisors (see below), whose sum is σ = 1366672944. Its totient is φ = 195238944.

The previous prime is 634526623. The next prime is 634526663. The reversal of 634526646 is 646625436.

It is a junction number, because it is equal to n+sod(n) for n = 634526598 and 634526607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4067401 + ... + 4067556.

It is an arithmetic number, because the mean of its divisors is an integer number (85417059).

Almost surely, 2^634526646 is an apocalyptic number.

634526646 is an abundant number, since it is smaller than the sum of its proper divisors (732146298).

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

634526646 is a wasteful number, since it uses less digits than its factorization.

634526646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8134975.

The product of its digits is 622080, while the sum is 42.

The square root of 634526646 is about 25189.8123454701. The cubic root of 634526646 is about 859.3101760488.

The spelling of 634526646 in words is "six hundred thirty-four million, five hundred twenty-six thousand, six hundred forty-six".