3686851 has 16 divisors (see below), whose sum is σ = 4377600. Its totient is φ = 3040128.

The previous prime is 3686849. The next prime is 3686867. The reversal of 3686851 is 1586863.

It is not a de Polignac number, because 3686851 - 2¹ = 3686849 is a prime.

It is a super-3 number, since 3×3686851³ (a number of 21 digits) contains 333 as substring.

It is an Ulam number.

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 3686851.

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 15 ways as a sum of consecutive naturals, for example, 32571 + ... + 32683.

It is an arithmetic number, because the mean of its divisors is an integer number (273600).

Almost surely, 2^3686851 is an apocalyptic number.

3686851 is a deficient number, since it is larger than the sum of its proper divisors (690749).

3686851 is a wasteful number, since it uses less digits than its factorization.

3686851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258.

The product of its digits is 34560, while the sum is 37.

The square root of 3686851 is about 1920.1174443247. The cubic root of 3686851 is about 154.4846009865.

The spelling of 3686851 in words is "three million, six hundred eighty-six thousand, eight hundred fifty-one".