86840517 has 16 divisors (see below), whose sum is σ = 122757632. Its totient is φ = 54509760.

The previous prime is 86840503. The next prime is 86840527. The reversal of 86840517 is 71504868.

It is not a de Polignac number, because 86840517 - 2⁸ = 86840261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86840527) 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, 9178 + ... + 16059.

It is an arithmetic number, because the mean of its divisors is an integer number (7672352).

Almost surely, 2^86840517 is an apocalyptic number.

It is an amenable number.

86840517 is a deficient number, since it is larger than the sum of its proper divisors (35917115).

86840517 is a wasteful number, since it uses less digits than its factorization.

86840517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25308.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 86840517 is about 9318.8259453646. The cubic root of 86840517 is about 442.8338391731.

The spelling of 86840517 in words is "eighty-six million, eight hundred forty thousand, five hundred seventeen".