678881288 has 16 divisors (see below), whose sum is σ = 1276231680. Its totient is φ = 338552848.

The previous prime is 678881279. The next prime is 678881299. The reversal of 678881288 is 882188876.

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, 107720 + ... + 113847.

It is an arithmetic number, because the mean of its divisors is an integer number (79764480).

Almost surely, 2^678881288 is an apocalyptic number.

It is an amenable number.

678881288 is a deficient number, since it is larger than the sum of its proper divisors (597350392).

678881288 is a wasteful number, since it uses less digits than its factorization.

678881288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221956 (or 221952 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 56.

The square root of 678881288 is about 26055.3504678022. The cubic root of 678881288 is about 878.8834358053.

The spelling of 678881288 in words is "six hundred seventy-eight million, eight hundred eighty-one thousand, two hundred eighty-eight".