6663564633 has 16 divisors (see below), whose sum is σ = 9828974592. Its totient is φ = 3981642000.

The previous prime is 6663564631. The next prime is 6663564653. The reversal of 6663564633 is 3364653666.

It is not a de Polignac number, because 6663564633 - 2¹ = 6663564631 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6663564631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1419673 + ... + 1424358.

It is an arithmetic number, because the mean of its divisors is an integer number (614310912).

Almost surely, 2^6663564633 is an apocalyptic number.

It is an amenable number.

6663564633 is a deficient number, since it is larger than the sum of its proper divisors (3165409959).

6663564633 is a wasteful number, since it uses less digits than its factorization.

6663564633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2844116.

The product of its digits is 4199040, while the sum is 48.

The square root of 6663564633 is about 81630.6598834041. The cubic root of 6663564633 is about 1881.7800999299.

The spelling of 6663564633 in words is "six billion, six hundred sixty-three million, five hundred sixty-four thousand, six hundred thirty-three".