86806187 has 4 divisors (see below), whose sum is σ = 93483600. Its totient is φ = 80128776.

The previous prime is 86806177. The next prime is 86806217. The reversal of 86806187 is 78160868.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 86806187 - 2⁸ = 86805931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86806127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3338687 + ... + 3338712.

It is an arithmetic number, because the mean of its divisors is an integer number (23370900).

Almost surely, 2^86806187 is an apocalyptic number.

86806187 is a deficient number, since it is larger than the sum of its proper divisors (6677413).

86806187 is a wasteful number, since it uses less digits than its factorization.

86806187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6677412.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 86806187 is about 9316.9837930523. The cubic root of 86806187 is about 442.7754774392.

The spelling of 86806187 in words is "eighty-six million, eight hundred six thousand, one hundred eighty-seven".