6663606323 has 4 divisors (see below), whose sum is σ = 7269388728. Its totient is φ = 6057823920.

The previous prime is 6663606317. The next prime is 6663606343. The reversal of 6663606323 is 3236063666.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6663606323 - 2¹² = 6663602227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6663606343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302891186 + ... + 302891207.

It is an arithmetic number, because the mean of its divisors is an integer number (1817347182).

Almost surely, 2^6663606323 is an apocalyptic number.

6663606323 is a deficient number, since it is larger than the sum of its proper divisors (605782405).

6663606323 is a wasteful number, since it uses less digits than its factorization.

6663606323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605782404.

The product of its (nonzero) digits is 419904, while the sum is 41.

The square root of 6663606323 is about 81630.9152404896. The cubic root of 6663606323 is about 1881.7840243184.

Adding to 6663606323 its reverse (3236063666), we get a palindrome (9899669989).

The spelling of 6663606323 in words is "six billion, six hundred sixty-three million, six hundred six thousand, three hundred twenty-three".