678768330 has 64 divisors (see below), whose sum is σ = 1712101248. Its totient is φ = 172005120.

The previous prime is 678768329. The next prime is 678768359. The reversal of 678768330 is 33867876.

678768330 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 678768330.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40620 + ... + 54840.

It is an arithmetic number, because the mean of its divisors is an integer number (26751582).

Almost surely, 2^678768330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678768330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (856050624).

678768330 is an abundant number, since it is smaller than the sum of its proper divisors (1033332918).

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

678768330 is a wasteful number, since it uses less digits than its factorization.

678768330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14311.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The square root of 678768330 is about 26053.1827230379. The cubic root of 678768330 is about 878.8346877529.

The spelling of 678768330 in words is "six hundred seventy-eight million, seven hundred sixty-eight thousand, three hundred thirty".