678586998 has 16 divisors (see below), whose sum is σ = 1363103280. Its totient is φ = 225207456.

The previous prime is 678586949. The next prime is 678587003. The reversal of 678586998 is 899685876.

678586998 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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245565 + ... + 248312.

It is an arithmetic number, because the mean of its divisors is an integer number (85193955).

Almost surely, 2^678586998 is an apocalyptic number.

678586998 is an abundant number, since it is smaller than the sum of its proper divisors (684516282).

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

678586998 is a wasteful number, since it uses less digits than its factorization.

678586998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494111.

The product of its digits is 52254720, while the sum is 66.

The square root of 678586998 is about 26049.7024551145. The cubic root of 678586998 is about 878.7564209679.

The spelling of 678586998 in words is "six hundred seventy-eight million, five hundred eighty-six thousand, nine hundred ninety-eight".