86686197 has 8 divisors (see below), whose sum is σ = 124472544. Its totient is φ = 53345328.

The previous prime is 86686181. The next prime is 86686207. The reversal of 86686197 is 79168668.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86686197 - 2⁴ = 86686181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86686097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1111323 + ... + 1111400.

It is an arithmetic number, because the mean of its divisors is an integer number (15559068).

Almost surely, 2^86686197 is an apocalyptic number.

It is an amenable number.

86686197 is a deficient number, since it is larger than the sum of its proper divisors (37786347).

86686197 is a wasteful number, since it uses less digits than its factorization.

86686197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222739.

The product of its digits is 870912, while the sum is 51.

The square root of 86686197 is about 9310.5422505888. The cubic root of 86686197 is about 442.5713709132.

The spelling of 86686197 in words is "eighty-six million, six hundred eighty-six thousand, one hundred ninety-seven".