634516684 has 12 divisors (see below), whose sum is σ = 1111433344. Its totient is φ = 316964304.

The previous prime is 634516681. The next prime is 634516691. The reversal of 634516684 is 486615436.

It is a happy number.

It is a super-2 number, since 2×634516684² = 805222844548711712, which contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 634516684.

It is not an unprimeable number, because it can be changed into a prime (634516681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68619 + ... + 77314.

Almost surely, 2^634516684 is an apocalyptic number.

It is an amenable number.

634516684 is a deficient number, since it is larger than the sum of its proper divisors (476916660).

634516684 is a wasteful number, since it uses less digits than its factorization.

634516684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147024 (or 147022 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The square root of 634516684 is about 25189.6146060236. The cubic root of 634516684 is about 859.3056789995.

The spelling of 634516684 in words is "six hundred thirty-four million, five hundred sixteen thousand, six hundred eighty-four".