86684197 has 4 divisors (see below), whose sum is σ = 86741920. Its totient is φ = 86626476.

The previous prime is 86684183. The next prime is 86684243. The reversal of 86684197 is 79148668.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86684197 - 2¹¹ = 86682149 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 86684197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86684107) 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, 26547 + ... + 29632.

It is an arithmetic number, because the mean of its divisors is an integer number (21685480).

Almost surely, 2^86684197 is an apocalyptic number.

It is an amenable number.

86684197 is a deficient number, since it is larger than the sum of its proper divisors (57723).

86684197 is a wasteful number, since it uses less digits than its factorization.

86684197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57722.

The product of its digits is 580608, while the sum is 49.

The square root of 86684197 is about 9310.4348448394. The cubic root of 86684197 is about 442.5679672589.

The spelling of 86684197 in words is "eighty-six million, six hundred eighty-four thousand, one hundred ninety-seven".