678244208 has 20 divisors (see below), whose sum is σ = 1320774840. Its totient is φ = 337399104.

The previous prime is 678244207. The next prime is 678244213. The reversal of 678244208 is 802442876.

678244208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678244201) 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, 104438 + ... + 110741.

It is an arithmetic number, because the mean of its divisors is an integer number (66038742).

Almost surely, 2^678244208 is an apocalyptic number.

It is an amenable number.

678244208 is a deficient number, since it is larger than the sum of its proper divisors (642530632).

678244208 is a wasteful number, since it uses less digits than its factorization.

678244208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215384 (or 215378 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 678244208 is about 26043.1220862630. The cubic root of 678244208 is about 878.6084273425.

The spelling of 678244208 in words is "six hundred seventy-eight million, two hundred forty-four thousand, two hundred eight".