678900084 has 12 divisors (see below), whose sum is σ = 1584100224. Its totient is φ = 226300024.

The previous prime is 678900071. The next prime is 678900109. The reversal of 678900084 is 480009876.

It is a happy number.

678900084 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 28287492 + ... + 28287515.

It is an arithmetic number, because the mean of its divisors is an integer number (132008352).

Almost surely, 2^678900084 is an apocalyptic number.

It is an amenable number.

678900084 is an abundant number, since it is smaller than the sum of its proper divisors (905200140).

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

678900084 is a wasteful number, since it uses less digits than its factorization.

678900084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56575014 (or 56575012 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 678900084 is about 26055.7111589763. The cubic root of 678900084 is about 878.8915468653.

The spelling of 678900084 in words is "six hundred seventy-eight million, nine hundred thousand, eighty-four".