4006663 has 8 divisors (see below), whose sum is σ = 4287920. Its totient is φ = 3732480.

The previous prime is 4006661. The next prime is 4006687. The reversal of 4006663 is 3666004.

It is a happy number.

4006663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4006663 - 2¹ = 4006661 is a prime.

4006663 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4006661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570 + ... + 2887.

It is an arithmetic number, because the mean of its divisors is an integer number (535990).

Almost surely, 2^4006663 is an apocalyptic number.

4006663 is a deficient number, since it is larger than the sum of its proper divisors (281257).

4006663 is a wasteful number, since it uses less digits than its factorization.

4006663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3537.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 4006663 is about 2001.6650568964. The cubic root of 4006663 is about 158.8281967455.

The spelling of 4006663 in words is "four million, six thousand, six hundred sixty-three".