86807215 has 12 divisors (see below), whose sum is σ = 114500232. Its totient is φ = 63132080.

The previous prime is 86807213. The next prime is 86807243. The reversal of 86807215 is 51270868.

It is not a de Polignac number, because 86807215 - 2¹ = 86807213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86807213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71137 + ... + 72346.

It is an arithmetic number, because the mean of its divisors is an integer number (9541686).

Almost surely, 2^86807215 is an apocalyptic number.

86807215 is a deficient number, since it is larger than the sum of its proper divisors (27693017).

86807215 is a wasteful number, since it uses less digits than its factorization.

86807215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143510 (or 143499 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 86807215 is about 9317.0389609575. The cubic root of 86807215 is about 442.7772252847. Note that the first 3 decimals are identical.

The spelling of 86807215 in words is "eighty-six million, eight hundred seven thousand, two hundred fifteen".