68272688 has 20 divisors (see below), whose sum is σ = 144304008. Its totient is φ = 31032960.

The previous prime is 68272661. The next prime is 68272703. The reversal of 68272688 is 88627286.

It is a super-2 number, since 2×68272688² = 9322319853490688, which contains 22 as substring.

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, 193781 + ... + 194132.

Almost surely, 2^68272688 is an apocalyptic number.

It is an amenable number.

68272688 is an abundant number, since it is smaller than the sum of its proper divisors (76031320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68272688 is a wasteful number, since it uses less digits than its factorization.

68272688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387932 (or 387926 counting only the distinct ones).

The product of its digits is 516096, while the sum is 47.

The square root of 68272688 is about 8262.7288470577. The cubic root of 68272688 is about 408.7103797476.

The spelling of 68272688 in words is "sixty-eight million, two hundred seventy-two thousand, six hundred eighty-eight".