868882816 has 16 divisors (see below), whose sum is σ = 1730977740. Its totient is φ = 434441344.

The previous prime is 868882771. The next prime is 868882823. The reversal of 868882816 is 618288868.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3393946 + ... + 3394201.

Almost surely, 2^868882816 is an apocalyptic number.

It is an amenable number.

868882816 is a deficient number, since it is larger than the sum of its proper divisors (862094924).

868882816 is an equidigital number, since it uses as much as digits as its factorization.

868882816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6788161 (or 6788149 counting only the distinct ones).

The product of its digits is 2359296, while the sum is 55.

The square root of 868882816 is about 29476.8182814903. The cubic root of 868882816 is about 954.2314718285.

The spelling of 868882816 in words is "eight hundred sixty-eight million, eight hundred eighty-two thousand, eight hundred sixteen".