68117808 has 40 divisors (see below), whose sum is σ = 191969856. Its totient is φ = 20641600.

The previous prime is 68117779. The next prime is 68117813. The reversal of 68117808 is 80871186.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63978 + ... + 65033.

Almost surely, 2^68117808 is an apocalyptic number.

It is an amenable number.

68117808 is an abundant number, since it is smaller than the sum of its proper divisors (123852048).

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

68117808 is a wasteful number, since it uses less digits than its factorization.

68117808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129033 (or 129027 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 39.

The square root of 68117808 is about 8253.3513193127. The cubic root of 68117808 is about 408.4010857820.

The spelling of 68117808 in words is "sixty-eight million, one hundred seventeen thousand, eight hundred eight".