634647952 has 10 divisors (see below), whose sum is σ = 1229630438. Its totient is φ = 317323968.

The previous prime is 634647847. The next prime is 634647953. The reversal of 634647952 is 259746436.

It can be written as a sum of positive squares in only one way, i.e., 588353536 + 46294416 = 24256^2 + 6804^2 .

It is not an unprimeable number, because it can be changed into a prime (634647953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19832733 + ... + 19832764.

Almost surely, 2^634647952 is an apocalyptic number.

It is an amenable number.

634647952 is a deficient number, since it is larger than the sum of its proper divisors (594982486).

634647952 is a wasteful number, since it uses less digits than its factorization.

634647952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39665505 (or 39665499 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 46.

The square root of 634647952 is about 25192.2200689022. The cubic root of 634647952 is about 859.3649322668.

The spelling of 634647952 in words is "six hundred thirty-four million, six hundred forty-seven thousand, nine hundred fifty-two".