86828691 has 16 divisors (see below), whose sum is σ = 117338624. Its totient is φ = 57106944.

The previous prime is 86828683. The next prime is 86828699. The reversal of 86828691 is 19682868.

It is an interprime number because it is at equal distance from previous prime (86828683) and next prime (86828699).

It is not a de Polignac number, because 86828691 - 2³ = 86828683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86828691.

It is not an unprimeable number, because it can be changed into a prime (86828699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150195 + ... + 150771.

It is an arithmetic number, because the mean of its divisors is an integer number (7333664).

Almost surely, 2^86828691 is an apocalyptic number.

86828691 is a deficient number, since it is larger than the sum of its proper divisors (30509933).

86828691 is a wasteful number, since it uses less digits than its factorization.

86828691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170.

The product of its digits is 331776, while the sum is 48.

The square root of 86828691 is about 9318.1914017689. The cubic root of 86828691 is about 442.8137364572.

The spelling of 86828691 in words is "eighty-six million, eight hundred twenty-eight thousand, six hundred ninety-one".