68888866 has 16 divisors (see below), whose sum is σ = 104401440. Its totient is φ = 34090560.

The previous prime is 68888863. The next prime is 68888867. The reversal of 68888866 is 66888886.

It is a self number, because there is not a number n which added to its sum of digits gives 68888866.

It is not an unprimeable number, because it can be changed into a prime (68888861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120361 + ... + 120931.

It is an arithmetic number, because the mean of its divisors is an integer number (6525090).

Almost surely, 2^68888866 is an apocalyptic number.

68888866 is a deficient number, since it is larger than the sum of its proper divisors (35512574).

68888866 is a wasteful number, since it uses less digits than its factorization.

68888866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089.

The product of its digits is 7077888, while the sum is 58.

The square root of 68888866 is about 8299.9316864659. The cubic root of 68888866 is about 409.9362700865.

The spelling of 68888866 in words is "sixty-eight million, eight hundred eighty-eight thousand, eight hundred sixty-six".