678867388 has 24 divisors (see below), whose sum is σ = 1237219200. Its totient is φ = 325570560.

The previous prime is 678867373. The next prime is 678867421. The reversal of 678867388 is 883768876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10213 + ... + 38236.

It is an arithmetic number, because the mean of its divisors is an integer number (51550800).

Almost surely, 2^678867388 is an apocalyptic number.

It is an amenable number.

678867388 is a deficient number, since it is larger than the sum of its proper divisors (558351812).

678867388 is a wasteful number, since it uses less digits than its factorization.

678867388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48597 (or 48595 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 61.

The square root of 678867388 is about 26055.0837265974. The cubic root of 678867388 is about 878.8774374256.

The spelling of 678867388 in words is "six hundred seventy-eight million, eight hundred sixty-seven thousand, three hundred eighty-eight".