634615216 has 40 divisors (see below), whose sum is σ = 1268758080. Its totient is φ = 307347456.

The previous prime is 634615213. The next prime is 634615237. The reversal of 634615216 is 612516436.

It is not an unprimeable number, because it can be changed into a prime (634615213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62256 + ... + 71728.

It is an arithmetic number, because the mean of its divisors is an integer number (31718952).

Almost surely, 2^634615216 is an apocalyptic number.

It is an amenable number.

634615216 is a deficient number, since it is larger than the sum of its proper divisors (634142864).

634615216 is a wasteful number, since it uses less digits than its factorization.

634615216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9613 (or 9607 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 634615216 is about 25191.5703361263. The cubic root of 634615216 is about 859.3501562775.

The spelling of 634615216 in words is "six hundred thirty-four million, six hundred fifteen thousand, two hundred sixteen".