678670794 has 24 divisors (see below), whose sum is σ = 1477850400. Its totient is φ = 225085608.

The previous prime is 678670793. The next prime is 678670807. The reversal of 678670794 is 497076876.

678670794 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 678670794.

It is not an unprimeable number, because it can be changed into a prime (678670793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91152 + ... + 98315.

It is an arithmetic number, because the mean of its divisors is an integer number (61577100).

Almost surely, 2^678670794 is an apocalyptic number.

678670794 is an abundant number, since it is smaller than the sum of its proper divisors (799179606).

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

678670794 is a wasteful number, since it uses less digits than its factorization.

678670794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189674 (or 189671 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The square root of 678670794 is about 26051.3107923575. The cubic root of 678670794 is about 878.7925908535.

The spelling of 678670794 in words is "six hundred seventy-eight million, six hundred seventy thousand, seven hundred ninety-four".