634815212 has 6 divisors (see below), whose sum is σ = 1110926628. Its totient is φ = 317407604.

The previous prime is 634815187. The next prime is 634815221. The reversal of 634815212 is 212518436.

634815212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79351898 + ... + 79351905.

It is an arithmetic number, because the mean of its divisors is an integer number (185154438).

Almost surely, 2^634815212 is an apocalyptic number.

It is an amenable number.

634815212 is a deficient number, since it is larger than the sum of its proper divisors (476111416).

634815212 is a wasteful number, since it uses less digits than its factorization.

634815212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158703807 (or 158703805 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 634815212 is about 25195.5395258764. The cubic root of 634815212 is about 859.4404201825.

The spelling of 634815212 in words is "six hundred thirty-four million, eight hundred fifteen thousand, two hundred twelve".