86778876 has 24 divisors (see below), whose sum is σ = 203659344. Its totient is φ = 28758400.

The previous prime is 86778841. The next prime is 86778917. The reversal of 86778876 is 67887768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18825 + ... + 22976.

It is an arithmetic number, because the mean of its divisors is an integer number (8485806).

Almost surely, 2^86778876 is an apocalyptic number.

It is an amenable number.

86778876 is an abundant number, since it is smaller than the sum of its proper divisors (116880468).

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

86778876 is a wasteful number, since it uses less digits than its factorization.

86778876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41981 (or 41979 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 57.

The square root of 86778876 is about 9315.5180210228. The cubic root of 86778876 is about 442.7290371646.

The spelling of 86778876 in words is "eighty-six million, seven hundred seventy-eight thousand, eight hundred seventy-six".