3811685 has 8 divisors (see below), whose sum is σ = 4814880. Its totient is φ = 2888784.

The previous prime is 3811681. The next prime is 3811711. The reversal of 3811685 is 5861183.

3811685 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 a cyclic number.

It is not a de Polignac number, because 3811685 - 2² = 3811681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3811681) 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 7 ways as a sum of consecutive naturals, for example, 19967 + ... + 20156.

It is an arithmetic number, because the mean of its divisors is an integer number (601860).

Almost surely, 2^3811685 is an apocalyptic number.

It is an amenable number.

3811685 is a deficient number, since it is larger than the sum of its proper divisors (1003195).

3811685 is a wasteful number, since it uses less digits than its factorization.

3811685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40147.

The product of its digits is 5760, while the sum is 32.

The square root of 3811685 is about 1952.3537077077. The cubic root of 3811685 is about 156.2088617032.

The spelling of 3811685 in words is "three million, eight hundred eleven thousand, six hundred eighty-five".