68613808 has 20 divisors (see below), whose sum is σ = 133132600. Its totient is φ = 34257024.

The previous prime is 68613803. The next prime is 68613817. The reversal of 68613808 is 80831686.

It is not an unprimeable number, because it can be changed into a prime (68613803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9868 + ... + 15316.

It is an arithmetic number, because the mean of its divisors is an integer number (6656630).

Almost surely, 2^68613808 is an apocalyptic number.

It is an amenable number.

68613808 is a deficient number, since it is larger than the sum of its proper divisors (64518792).

68613808 is a wasteful number, since it uses less digits than its factorization.

68613808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6244 (or 6238 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 68613808 is about 8283.3452179660. The cubic root of 68613808 is about 409.3899473827.

The spelling of 68613808 in words is "sixty-eight million, six hundred thirteen thousand, eight hundred eight".