68634988 has 6 divisors (see below), whose sum is σ = 120111236. Its totient is φ = 34317492.

The previous prime is 68634971. The next prime is 68634989. The reversal of 68634988 is 88943686.

It is not an unprimeable number, because it can be changed into a prime (68634989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8579370 + ... + 8579377.

Almost surely, 2^68634988 is an apocalyptic number.

It is an amenable number.

68634988 is a deficient number, since it is larger than the sum of its proper divisors (51476248).

68634988 is a wasteful number, since it uses less digits than its factorization.

68634988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17158751 (or 17158749 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 52.

The square root of 68634988 is about 8284.6235883111. The cubic root of 68634988 is about 409.4320671216.

The spelling of 68634988 in words is "sixty-eight million, six hundred thirty-four thousand, nine hundred eighty-eight".