3887685 has 24 divisors (see below), whose sum is σ = 7094880. Its totient is φ = 1963872.

The previous prime is 3887683. The next prime is 3887707. The reversal of 3887685 is 5867883.

3887685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3887685 - 2¹ = 3887683 is a prime.

It is a super-2 number, since 2×3887685² = 30228189318450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a d-powerful number, because it can be written as 3² + 8 + 8⁵ + 7 + 6⁸ + 8⁷ + 5⁷ .

It is a self number, because there is not a number n which added to its sum of digits gives 3887685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3887683) 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 23 ways as a sum of consecutive naturals, for example, 1419 + ... + 3128.

It is an arithmetic number, because the mean of its divisors is an integer number (295620).

Almost surely, 2^3887685 is an apocalyptic number.

It is an amenable number.

3887685 is a deficient number, since it is larger than the sum of its proper divisors (3207195).

3887685 is a wasteful number, since it uses less digits than its factorization.

3887685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4577 (or 4574 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 3887685 is about 1971.7213291944. The cubic root of 3887685 is about 157.2402369661.

The spelling of 3887685 in words is "three million, eight hundred eighty-seven thousand, six hundred eighty-five".