878785568 has 24 divisors (see below), whose sum is σ = 1821168720. Its totient is φ = 416266560.

The previous prime is 878785561. The next prime is 878785571. The reversal of 878785568 is 865587878.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 878785568.

It is not an unprimeable number, because it can be changed into a prime (878785561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722078 + ... + 723293.

It is an arithmetic number, because the mean of its divisors is an integer number (75882030).

Almost surely, 2^878785568 is an apocalyptic number.

It is an amenable number.

878785568 is an abundant number, since it is smaller than the sum of its proper divisors (942383152).

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

878785568 is a wasteful number, since it uses less digits than its factorization.

878785568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445400 (or 1445392 counting only the distinct ones).

The product of its digits is 30105600, while the sum is 62.

The square root of 878785568 is about 29644.3176342448. The cubic root of 878785568 is about 957.8429462310.

The spelling of 878785568 in words is "eight hundred seventy-eight million, seven hundred eighty-five thousand, five hundred sixty-eight".