86888691 has 48 divisors (see below), whose sum is σ = 140375040. Its totient is φ = 51554880.

The previous prime is 86888647. The next prime is 86888719. The reversal of 86888691 is 19688868.

It is not a de Polignac number, because 86888691 - 2¹⁰ = 86887667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86888591) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 195916 + ... + 196358.

It is an arithmetic number, because the mean of its divisors is an integer number (2924480).

Almost surely, 2^86888691 is an apocalyptic number.

86888691 is a deficient number, since it is larger than the sum of its proper divisors (53486349).

86888691 is a wasteful number, since it uses less digits than its factorization.

86888691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 533 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 54.

The square root of 86888691 is about 9321.4103546620. The cubic root of 86888691 is about 442.9157100730.

The spelling of 86888691 in words is "eighty-six million, eight hundred eighty-eight thousand, six hundred ninety-one".