868784884220 has 96 divisors (see below), whose sum is σ = 2034236768256. Its totient is φ = 309018931200.

The previous prime is 868784884171. The next prime is 868784884229. The reversal of 868784884220 is 22488487868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868784884229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1764764 + ... + 2202716.

It is an arithmetic number, because the mean of its divisors is an integer number (21189966336).

Almost surely, 2^868784884220 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 868784884220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1017118384128).

868784884220 is an abundant number, since it is smaller than the sum of its proper divisors (1165451884036).

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

868784884220 is a wasteful number, since it uses less digits than its factorization.

868784884220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438171 (or 438169 counting only the distinct ones).

The product of its (nonzero) digits is 88080384, while the sum is 65.

The spelling of 868784884220 in words is "eight hundred sixty-eight billion, seven hundred eighty-four million, eight hundred eighty-four thousand, two hundred twenty".