3857685 has 32 divisors (see below), whose sum is σ = 6763008. Its totient is φ = 1866240.

The previous prime is 3857683. The next prime is 3857717. The reversal of 3857685 is 5867583.

3857685 = T₁₄ + T₁₅ + ... + T₂₈₄.

It is not a de Polignac number, because 3857685 - 2¹ = 3857683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3857681) 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 31 ways as a sum of consecutive naturals, for example, 14100 + ... + 14370.

It is an arithmetic number, because the mean of its divisors is an integer number (211344).

Almost surely, 2^3857685 is an apocalyptic number.

It is an amenable number.

3857685 is a deficient number, since it is larger than the sum of its proper divisors (2905323).

3857685 is a wasteful number, since it uses less digits than its factorization.

3857685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365.

The product of its digits is 201600, while the sum is 42.

The square root of 3857685 is about 1964.0990300899. The cubic root of 3857685 is about 156.8347348817.

The spelling of 3857685 in words is "three million, eight hundred fifty-seven thousand, six hundred eighty-five".