3681635 has 8 divisors (see below), whose sum is σ = 4464096. Its totient is φ = 2914560.

The previous prime is 3681619. The next prime is 3681683. The reversal of 3681635 is 5361863.

3681635 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3681635 - 2⁴ = 3681619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3311 + ... + 4280.

It is an arithmetic number, because the mean of its divisors is an integer number (558012).

Almost surely, 2^3681635 is an apocalyptic number.

3681635 is a deficient number, since it is larger than the sum of its proper divisors (782461).

3681635 is an equidigital number, since it uses as much as digits as its factorization.

3681635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7693.

The product of its digits is 12960, while the sum is 32.

The square root of 3681635 is about 1918.7587133353. The cubic root of 3681635 is about 154.4117138553.

The spelling of 3681635 in words is "three million, six hundred eighty-one thousand, six hundred thirty-five".