86691876 has 96 divisors (see below), whose sum is σ = 222179328. Its totient is φ = 26231040.

The previous prime is 86691863. The next prime is 86691883. The reversal of 86691876 is 67819668.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 531771 + ... + 531933.

It is an arithmetic number, because the mean of its divisors is an integer number (2314368).

Almost surely, 2^86691876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86691876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111089664).

86691876 is an abundant number, since it is smaller than the sum of its proper divisors (135487452).

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

86691876 is a wasteful number, since it uses less digits than its factorization.

86691876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 279 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 86691876 is about 9310.8472224605. The cubic root of 86691876 is about 442.5810353043.

The spelling of 86691876 in words is "eighty-six million, six hundred ninety-one thousand, eight hundred seventy-six".