3684691 has 4 divisors (see below), whose sum is σ = 3803584. Its totient is φ = 3565800.

The previous prime is 3684683. The next prime is 3684697. The reversal of 3684691 is 1964863.

3684691 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 an emirpimes, since its reverse is a distinct semiprime: 1964863 = 149 ⋅13187.

It is a cyclic number.

It is not a de Polignac number, because 3684691 - 2³ = 3684683 is a prime.

It is a Duffinian number.

3684691 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3684691.

It is not an unprimeable number, because it can be changed into a prime (3684697) 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, 59400 + ... + 59461.

It is an arithmetic number, because the mean of its divisors is an integer number (950896).

Almost surely, 2^3684691 is an apocalyptic number.

3684691 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3684691 is a deficient number, since it is larger than the sum of its proper divisors (118893).

3684691 is a wasteful number, since it uses less digits than its factorization.

3684691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118892.

The product of its digits is 31104, while the sum is 37.

The square root of 3684691 is about 1919.5548963236. The cubic root of 3684691 is about 154.4544260102.

The spelling of 3684691 in words is "three million, six hundred eighty-four thousand, six hundred ninety-one".