869885568 has 96 divisors (see below), whose sum is σ = 2595989760. Its totient is φ = 289951488.

The previous prime is 869885521. The next prime is 869885623. The reversal of 869885568 is 865588968.

869885568 is a `hidden beast` number, since 8 + 69 + 8 + 8 + 5 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17121 + ... + 45087.

It is an arithmetic number, because the mean of its divisors is an integer number (27041560).

Almost surely, 2^869885568 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 869885568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1297994880).

869885568 is an abundant number, since it is smaller than the sum of its proper divisors (1726104192).

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

869885568 is an equidigital number, since it uses as much as digits as its factorization.

869885568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27996 (or 27972 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 63.

The square root of 869885568 is about 29493.8225396438. The cubic root of 869885568 is about 954.5984141600.

The spelling of 869885568 in words is "eight hundred sixty-nine million, eight hundred eighty-five thousand, five hundred sixty-eight".