6663822563 has 2 divisors, whose sum is σ = 6663822564. Its totient is φ = 6663822562.

The previous prime is 6663822547. The next prime is 6663822611. The reversal of 6663822563 is 3652283666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6663822563 - 2⁴ = 6663822547 is a prime.

It is a super-2 number, since 2×6663822563² = 88813062302295777938, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (6663822863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3331911281 + 3331911282.

It is an arithmetic number, because the mean of its divisors is an integer number (3331911282).

Almost surely, 2^6663822563 is an apocalyptic number.

6663822563 is a deficient number, since it is larger than the sum of its proper divisors (1).

6663822563 is an equidigital number, since it uses as much as digits as its factorization.

6663822563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 47.

The square root of 6663822563 is about 81632.2397279408. The cubic root of 6663822563 is about 1881.8043792912.

The spelling of 6663822563 in words is "six billion, six hundred sixty-three million, eight hundred twenty-two thousand, five hundred sixty-three".