678914198 has 8 divisors (see below), whose sum is σ = 1051222080. Its totient is φ = 328506840.

The previous prime is 678914191. The next prime is 678914209. The reversal of 678914198 is 891419876.

678914198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678914191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5475053 + ... + 5475176.

It is an arithmetic number, because the mean of its divisors is an integer number (131402760).

Almost surely, 2^678914198 is an apocalyptic number.

678914198 is a deficient number, since it is larger than the sum of its proper divisors (372307882).

678914198 is a wasteful number, since it uses less digits than its factorization.

678914198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10950262.

The product of its digits is 870912, while the sum is 53.

The square root of 678914198 is about 26055.9820003008. The cubic root of 678914198 is about 878.8976373979.

The spelling of 678914198 in words is "six hundred seventy-eight million, nine hundred fourteen thousand, one hundred ninety-eight".