6663056399 has 8 divisors (see below), whose sum is σ = 6680257920. Its totient is φ = 6645871576.

The previous prime is 6663056377. The next prime is 6663056431. The reversal of 6663056399 is 9936503666.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6663056399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6663056399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6663056339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1234184 + ... + 1239570.

It is an arithmetic number, because the mean of its divisors is an integer number (835032240).

Almost surely, 2^6663056399 is an apocalyptic number.

6663056399 is a deficient number, since it is larger than the sum of its proper divisors (17201521).

6663056399 is a wasteful number, since it uses less digits than its factorization.

6663056399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8349.

The product of its (nonzero) digits is 4723920, while the sum is 53.

The square root of 6663056399 is about 81627.5468147855. The cubic root of 6663056399 is about 1881.7322572213.

The spelling of 6663056399 in words is "six billion, six hundred sixty-three million, fifty-six thousand, three hundred ninety-nine".