3686841 has 12 divisors (see below), whose sum is σ = 5638932. Its totient is φ = 2313216.

The previous prime is 3686833. The next prime is 3686849. The reversal of 3686841 is 1486863.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3686833) and next prime (3686849).

It can be written as a sum of positive squares in 2 ways, for example, as 2903616 + 783225 = 1704^2 + 885^2 .

It is not a de Polignac number, because 3686841 - 2³ = 3686833 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3686796 and 3686805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3686849) 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, 11896 + ... + 12201.

It is an arithmetic number, because the mean of its divisors is an integer number (469911).

Almost surely, 2^3686841 is an apocalyptic number.

It is an amenable number.

3686841 is a deficient number, since it is larger than the sum of its proper divisors (1952091).

3686841 is a wasteful number, since it uses less digits than its factorization.

3686841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24120 (or 24117 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 3686841 is about 1920.1148403155. The cubic root of 3686841 is about 154.4844613147.

The spelling of 3686841 in words is "three million, six hundred eighty-six thousand, eight hundred forty-one".