86779868 has 24 divisors (see below), whose sum is σ = 176837472. Its totient is φ = 36489024.

The previous prime is 86779867. The next prime is 86779871. The reversal of 86779868 is 86897768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86779867) 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, 27755 + ... + 30722.

It is an arithmetic number, because the mean of its divisors is an integer number (7368228).

Almost surely, 2^86779868 is an apocalyptic number.

It is an amenable number.

86779868 is an abundant number, since it is smaller than the sum of its proper divisors (90057604).

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

86779868 is a wasteful number, since it uses less digits than its factorization.

86779868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58541 (or 58539 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 59.

The square root of 86779868 is about 9315.5712653600. The cubic root of 86779868 is about 442.7307241556.

The spelling of 86779868 in words is "eighty-six million, seven hundred seventy-nine thousand, eight hundred sixty-eight".