3686081 has 4 divisors (see below), whose sum is σ = 4212672. Its totient is φ = 3159492.

The previous prime is 3686071. The next prime is 3686083. The reversal of 3686081 is 1806863.

3686081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 de Polignac number, because none of the positive numbers 2^k-3686081 is a prime.

It is a super-2 number, since 2×3686081² = 27174386277122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3686083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263285 + ... + 263298.

It is an arithmetic number, because the mean of its divisors is an integer number (1053168).

Almost surely, 2^3686081 is an apocalyptic number.

It is an amenable number.

3686081 is a deficient number, since it is larger than the sum of its proper divisors (526591).

3686081 is an equidigital number, since it uses as much as digits as its factorization.

3686081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526590.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 3686081 is about 1919.9169252861. The cubic root of 3686081 is about 154.4738455184.

The spelling of 3686081 in words is "three million, six hundred eighty-six thousand, eighty-one".