768404868 has 72 divisors (see below), whose sum is σ = 2275295904. Its totient is φ = 199584000.

The previous prime is 768404867. The next prime is 768404887. The reversal of 768404868 is 868404867.

It is a self number, because there is not a number n which added to its sum of digits gives 768404868.

It is not an unprimeable number, because it can be changed into a prime (768404867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52933 + ... + 65868.

It is an arithmetic number, because the mean of its divisors is an integer number (31601332).

Almost surely, 2^768404868 is an apocalyptic number.

It is an amenable number.

768404868 is an abundant number, since it is smaller than the sum of its proper divisors (1506891036).

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

768404868 is a wasteful number, since it uses less digits than its factorization.

768404868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118833 (or 118824 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 51.

The square root of 768404868 is about 27720.1166664212. The cubic root of 768404868 is about 915.9322887472.

Subtracting 768404868 from its reverse (868404867), we obtain a palindrome (99999999).

The spelling of 768404868 in words is "seven hundred sixty-eight million, four hundred four thousand, eight hundred sixty-eight".