68656128 has 44 divisors (see below), whose sum is σ = 183001800. Its totient is φ = 22884352.

The previous prime is 68656123. The next prime is 68656151. The reversal of 68656128 is 82165686.

It is a self number, because there is not a number n which added to its sum of digits gives 68656128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68656121) 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, 8103 + ... + 14246.

Almost surely, 2^68656128 is an apocalyptic number.

It is an amenable number.

68656128 is an abundant number, since it is smaller than the sum of its proper divisors (114345672).

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

68656128 is a wasteful number, since it uses less digits than its factorization.

68656128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22372 (or 22354 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 68656128 is about 8285.8993476870. The cubic root of 68656128 is about 409.4740986747.

The spelling of 68656128 in words is "sixty-eight million, six hundred fifty-six thousand, one hundred twenty-eight".