678018378 has 16 divisors (see below), whose sum is σ = 1435803840. Its totient is φ = 212711616.

The previous prime is 678018373. The next prime is 678018413. The reversal of 678018378 is 873810876.

678018378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (678018371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3323518 + ... + 3323721.

It is an arithmetic number, because the mean of its divisors is an integer number (89737740).

Almost surely, 2^678018378 is an apocalyptic number.

678018378 is an abundant number, since it is smaller than the sum of its proper divisors (757785462).

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

678018378 is a wasteful number, since it uses less digits than its factorization.

678018378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6647261.

The product of its (nonzero) digits is 451584, while the sum is 48.

The square root of 678018378 is about 26038.7860316106. The cubic root of 678018378 is about 878.5109019160.

The spelling of 678018378 in words is "six hundred seventy-eight million, eighteen thousand, three hundred seventy-eight".