3855685 has 8 divisors (see below), whose sum is σ = 4899096. Its totient is φ = 2903040.

The previous prime is 3855667. The next prime is 3855703. The reversal of 3855685 is 5865583.

It is an interprime number because it is at equal distance from previous prime (3855667) and next prime (3855703).

It can be written as a sum of positive squares in 4 ways, for example, as 49284 + 3806401 = 222^2 + 1951^2 .

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

It is not a de Polignac number, because 3855685 - 2⁷ = 3855557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22596 + ... + 22765.

It is an arithmetic number, because the mean of its divisors is an integer number (612387).

Almost surely, 2^3855685 is an apocalyptic number.

It is an amenable number.

3855685 is a deficient number, since it is larger than the sum of its proper divisors (1043411).

3855685 is a wasteful number, since it uses less digits than its factorization.

3855685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45383.

The product of its digits is 144000, while the sum is 40.

The square root of 3855685 is about 1963.5898247852. The cubic root of 3855685 is about 156.8076267679.

The spelling of 3855685 in words is "three million, eight hundred fifty-five thousand, six hundred eighty-five".