634688330 has 8 divisors (see below), whose sum is σ = 1142439012. Its totient is φ = 253875328.

The previous prime is 634688309. The next prime is 634688359. The reversal of 634688330 is 33886436.

It can be written as a sum of positive squares in 2 ways, for example, as 593945641 + 40742689 = 24371^2 + 6383^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31734407 + ... + 31734426.

Almost surely, 2^634688330 is an apocalyptic number.

634688330 is a deficient number, since it is larger than the sum of its proper divisors (507750682).

634688330 is a wasteful number, since it uses less digits than its factorization.

634688330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63468840.

The product of its (nonzero) digits is 248832, while the sum is 41.

The square root of 634688330 is about 25193.0214543631. The cubic root of 634688330 is about 859.3831569121.

The spelling of 634688330 in words is "six hundred thirty-four million, six hundred eighty-eight thousand, three hundred thirty".