3686811 has 4 divisors (see below), whose sum is σ = 4915752. Its totient is φ = 2457872.

The previous prime is 3686801. The next prime is 3686833. The reversal of 3686811 is 1186863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1186863 = 3 ⋅395621.

It is a cyclic number.

It is not a de Polignac number, because 3686811 - 2⁶ = 3686747 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3686801) 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, 614466 + ... + 614471.

It is an arithmetic number, because the mean of its divisors is an integer number (1228938).

Almost surely, 2^3686811 is an apocalyptic number.

3686811 is a deficient number, since it is larger than the sum of its proper divisors (1228941).

3686811 is a wasteful number, since it uses less digits than its factorization.

3686811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228940.

The product of its digits is 6912, while the sum is 33.

The square root of 3686811 is about 1920.1070282669. The cubic root of 3686811 is about 154.4840422978.

The spelling of 3686811 in words is "three million, six hundred eighty-six thousand, eight hundred eleven".