68816866 has 8 divisors (see below), whose sum is σ = 103680720. Its totient is φ = 34256628.

The previous prime is 68816857. The next prime is 68816903. The reversal of 68816866 is 66861886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×68816866² = 9471522092123912, 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, 75336 + ... + 76243.

It is an arithmetic number, because the mean of its divisors is an integer number (12960090).

Almost surely, 2^68816866 is an apocalyptic number.

68816866 is a deficient number, since it is larger than the sum of its proper divisors (34863854).

68816866 is a wasteful number, since it uses less digits than its factorization.

68816866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151808.

The product of its digits is 663552, while the sum is 49.

The square root of 68816866 is about 8295.5931674595. The cubic root of 68816866 is about 409.7934037477.

The spelling of 68816866 in words is "sixty-eight million, eight hundred sixteen thousand, eight hundred sixty-six".