678319808 has 14 divisors (see below), whose sum is σ = 1346040996. Its totient is φ = 339159872.

The previous prime is 678319799. The next prime is 678319847. The reversal of 678319808 is 808913876.

It is a happy number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5299310 + ... + 5299437.

Almost surely, 2^678319808 is an apocalyptic number.

It is an amenable number.

678319808 is a deficient number, since it is larger than the sum of its proper divisors (667721188).

678319808 is a wasteful number, since it uses less digits than its factorization.

678319808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10598759 (or 10598749 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 678319808 is about 26044.5734847012. The cubic root of 678319808 is about 878.6410706140.

The spelling of 678319808 in words is "six hundred seventy-eight million, three hundred nineteen thousand, eight hundred eight".