68631628 has 12 divisors (see below), whose sum is σ = 129344320. Its totient is φ = 31676112.

The previous prime is 68631617. The next prime is 68631677. The reversal of 68631628 is 82613686.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 659868 + ... + 659971.

Almost surely, 2^68631628 is an apocalyptic number.

It is an amenable number.

68631628 is a deficient number, since it is larger than the sum of its proper divisors (60712692).

68631628 is a wasteful number, since it uses less digits than its factorization.

68631628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319856 (or 1319854 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 68631628 is about 8284.4208005147. The cubic root of 68631628 is about 409.4253858150.

The spelling of 68631628 in words is "sixty-eight million, six hundred thirty-one thousand, six hundred twenty-eight".