3870685 has 32 divisors (see below), whose sum is σ = 5870592. Its totient is φ = 2384640.

The previous prime is 3870667. The next prime is 3870689. The reversal of 3870685 is 5860783.

It is not a de Polignac number, because 3870685 - 2⁵ = 3870653 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3870689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21295 + ... + 21475.

It is an arithmetic number, because the mean of its divisors is an integer number (183456).

Almost surely, 2^3870685 is an apocalyptic number.

3870685 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3870685 is a deficient number, since it is larger than the sum of its proper divisors (1999907).

3870685 is a wasteful number, since it uses less digits than its factorization.

3870685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 3870685 is about 1967.4056521216. The cubic root of 3870685 is about 157.0107096431.

The spelling of 3870685 in words is "three million, eight hundred seventy thousand, six hundred eighty-five".