3663806 has 16 divisors (see below), whose sum is σ = 5859216. Its totient is φ = 1712256.

The previous prime is 3663767. The next prime is 3663811. The reversal of 3663806 is 6083663.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6425 + ... + 6971.

It is an arithmetic number, because the mean of its divisors is an integer number (366201).

Almost surely, 2^3663806 is an apocalyptic number.

3663806 is a deficient number, since it is larger than the sum of its proper divisors (2195410).

3663806 is a wasteful number, since it uses less digits than its factorization.

3663806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 3663806 is about 1914.1071025415. The cubic root of 3663806 is about 154.1620546303.

The spelling of 3663806 in words is "three million, six hundred sixty-three thousand, eight hundred six".