768989868 has 24 divisors (see below), whose sum is σ = 1856183280. Its totient is φ = 247490880.

The previous prime is 768989867. The next prime is 768989873. The reversal of 768989868 is 868989867.

It is not an unprimeable number, because it can be changed into a prime (768989867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1104523 + ... + 1105218.

It is an arithmetic number, because the mean of its divisors is an integer number (77340970).

Almost surely, 2^768989868 is an apocalyptic number.

It is an amenable number.

768989868 is an abundant number, since it is smaller than the sum of its proper divisors (1087193412).

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

768989868 is a wasteful number, since it uses less digits than its factorization.

768989868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209777 (or 2209775 counting only the distinct ones).

The product of its digits is 83607552, while the sum is 69.

The square root of 768989868 is about 27730.6665624900. Note that the first 3 decimals coincide. The cubic root of 768989868 is about 916.1646681834.

Subtracting 768989868 from its reverse (868989867), we obtain a palindrome (99999999).

The spelling of 768989868 in words is "seven hundred sixty-eight million, nine hundred eighty-nine thousand, eight hundred sixty-eight".