3663943 has 8 divisors (see below), whose sum is σ = 3788208. Its totient is φ = 3541824.

The previous prime is 3663929. The next prime is 3663949. The reversal of 3663943 is 3493663.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3663943 - 2⁵ = 3663911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3663899 and 3663908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3663949) 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 7 ways as a sum of consecutive naturals, for example, 3396 + ... + 4342.

It is an arithmetic number, because the mean of its divisors is an integer number (473526).

Almost surely, 2^3663943 is an apocalyptic number.

3663943 is a deficient number, since it is larger than the sum of its proper divisors (124265).

3663943 is an equidigital number, since it uses as much as digits as its factorization.

3663943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073.

The product of its digits is 34992, while the sum is 34.

The square root of 3663943 is about 1914.1428891282. The cubic root of 3663943 is about 154.1639761238.

The spelling of 3663943 in words is "three million, six hundred sixty-three thousand, nine hundred forty-three".