3995663 has 8 divisors (see below), whose sum is σ = 4835232. Its totient is φ = 3223296.

The previous prime is 3995659. The next prime is 3995671. The reversal of 3995663 is 3665993.

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 3995663 - 2² = 3995659 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 3995663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3995623) 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, 16670 + ... + 16907.

It is an arithmetic number, because the mean of its divisors is an integer number (604404).

Almost surely, 2^3995663 is an apocalyptic number.

3995663 is a deficient number, since it is larger than the sum of its proper divisors (839569).

3995663 is a wasteful number, since it uses less digits than its factorization.

3995663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33601.

The product of its digits is 131220, while the sum is 41.

The square root of 3995663 is about 1998.9154559410. The cubic root of 3995663 is about 158.6827131297.

The spelling of 3995663 in words is "three million, nine hundred ninety-five thousand, six hundred sixty-three".