68717866 has 16 divisors (see below), whose sum is σ = 118528704. Its totient is φ = 29268864.

The previous prime is 68717837. The next prime is 68717867. The reversal of 68717866 is 66871786.

It is not an unprimeable number, because it can be changed into a prime (68717867) 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, 12775 + ... + 17338.

It is an arithmetic number, because the mean of its divisors is an integer number (7408044).

Almost surely, 2^68717866 is an apocalyptic number.

68717866 is a deficient number, since it is larger than the sum of its proper divisors (49810838).

68717866 is a wasteful number, since it uses less digits than its factorization.

68717866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30285.

The product of its digits is 677376, while the sum is 49.

The square root of 68717866 is about 8289.6239962980. The cubic root of 68717866 is about 409.5967997301.

The spelling of 68717866 in words is "sixty-eight million, seven hundred seventeen thousand, eight hundred sixty-six".