3685806 has 24 divisors (see below), whose sum is σ = 8072064. Its totient is φ = 1215360.

The previous prime is 3685783. The next prime is 3685811. The reversal of 3685806 is 6085863.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 691 + ... + 2801.

It is an arithmetic number, because the mean of its divisors is an integer number (336336).

Almost surely, 2^3685806 is an apocalyptic number.

3685806 is an abundant number, since it is smaller than the sum of its proper divisors (4386258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3685806 is a wasteful number, since it uses less digits than its factorization.

3685806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216 (or 2213 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 3685806 is about 1919.8453062682. The cubic root of 3685806 is about 154.4700039168.

The spelling of 3685806 in words is "three million, six hundred eighty-five thousand, eight hundred six".