868831620 has 96 divisors (see below), whose sum is σ = 2566865280. Its totient is φ = 218972160.

The previous prime is 868831591. The next prime is 868831627. The reversal of 868831620 is 26138868.

It is not an unprimeable number, because it can be changed into a prime (868831627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 752964 + ... + 754116.

It is an arithmetic number, because the mean of its divisors is an integer number (26738180).

Almost surely, 2^868831620 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 868831620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1283432640).

868831620 is an abundant number, since it is smaller than the sum of its proper divisors (1698033660).

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

868831620 is a wasteful number, since it uses less digits than its factorization.

868831620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845 (or 1843 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 868831620 is about 29475.9498574685. The cubic root of 868831620 is about 954.2127298328.

The spelling of 868831620 in words is "eight hundred sixty-eight million, eight hundred thirty-one thousand, six hundred twenty".