878335668 has 144 divisors (see below), whose sum is σ = 2698585344. Its totient is φ = 235146240.

The previous prime is 878335643. The next prime is 878335669. The reversal of 878335668 is 866533878.

It is a happy number.

878335668 is a `hidden beast` number, since 8 + 78 + 3 + 3 + 566 + 8 = 666.

878335668 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 not an unprimeable number, because it can be changed into a prime (878335669) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1803321 + ... + 1803807.

It is an arithmetic number, because the mean of its divisors is an integer number (18740176).

Almost surely, 2^878335668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 878335668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1349292672).

878335668 is an abundant number, since it is smaller than the sum of its proper divisors (1820249676).

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

878335668 is a wasteful number, since it uses less digits than its factorization.

878335668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942 (or 937 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 878335668 is about 29636.7283619498. The cubic root of 878335668 is about 957.6794603485.

The spelling of 878335668 in words is "eight hundred seventy-eight million, three hundred thirty-five thousand, six hundred sixty-eight".