3686189 has 4 divisors (see below), whose sum is σ = 3969756. Its totient is φ = 3402624.

The previous prime is 3686183. The next prime is 3686237. The reversal of 3686189 is 9816863.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2402500 + 1283689 = 1550^2 + 1133^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3686189 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 (3686183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141764 + ... + 141789.

It is an arithmetic number, because the mean of its divisors is an integer number (992439).

Almost surely, 2^3686189 is an apocalyptic number.

It is an amenable number.

3686189 is a deficient number, since it is larger than the sum of its proper divisors (283567).

3686189 is a wasteful number, since it uses less digits than its factorization.

3686189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283566.

The product of its digits is 62208, while the sum is 41.

The square root of 3686189 is about 1919.9450512970. The cubic root of 3686189 is about 154.4753541679.

The spelling of 3686189 in words is "three million, six hundred eighty-six thousand, one hundred eighty-nine".