3686091 has 8 divisors (see below), whose sum is σ = 4924560. Its totient is φ = 2452512.

The previous prime is 3686087. The next prime is 3686099. The reversal of 3686091 is 1906863.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3686091 - 2² = 3686087 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (3686099) 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 7 ways as a sum of consecutive naturals, for example, 1261 + ... + 2993.

It is an arithmetic number, because the mean of its divisors is an integer number (615570).

Almost surely, 2^3686091 is an apocalyptic number.

3686091 is a deficient number, since it is larger than the sum of its proper divisors (1238469).

3686091 is a wasteful number, since it uses less digits than its factorization.

3686091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 3686091 is about 1919.9195295637. The cubic root of 3686091 is about 154.4739852094.

Multiplying 3686091 by its sum of digits (33), we get a triangular number (121641003 = T₁₅₅₉₇).

The spelling of 3686091 in words is "three million, six hundred eighty-six thousand, ninety-one".