678819888 has 60 divisors (see below), whose sum is σ = 1902585568. Its totient is φ = 225936000.

The previous prime is 678819881. The next prime is 678819893. The reversal of 678819888 is 888918876.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (678819881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105006 + ... + 111282.

Almost surely, 2^678819888 is an apocalyptic number.

It is an amenable number.

678819888 is an abundant number, since it is smaller than the sum of its proper divisors (1223765680).

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

678819888 is a wasteful number, since it uses less digits than its factorization.

678819888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7042 (or 7033 counting only the distinct ones).

The product of its digits is 12386304, while the sum is 63.

The square root of 678819888 is about 26054.1721802862. The cubic root of 678819888 is about 878.8569387476.

The spelling of 678819888 in words is "six hundred seventy-eight million, eight hundred nineteen thousand, eight hundred eighty-eight".