678820612 has 12 divisors (see below), whose sum is σ = 1188228160. Its totient is φ = 339326856.

The previous prime is 678820561. The next prime is 678820631. The reversal of 678820612 is 216028876.

678820612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 312 + ... + 36847.

Almost surely, 2^678820612 is an apocalyptic number.

It is an amenable number.

678820612 is a deficient number, since it is larger than the sum of its proper divisors (509407548).

678820612 is a wasteful number, since it uses less digits than its factorization.

678820612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41730 (or 41728 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 678820612 is about 26054.1860744104. The cubic root of 678820612 is about 878.8572511978.

The spelling of 678820612 in words is "six hundred seventy-eight million, eight hundred twenty thousand, six hundred twelve".