663782243 has 2 divisors, whose sum is σ = 663782244. Its totient is φ = 663782242.

The previous prime is 663782239. The next prime is 663782303. The reversal of 663782243 is 342287366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 663782243 - 2² = 663782239 is a prime.

It is a super-2 number, since 2×663782243² = 881213732244222098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 663782243.

It is not a weakly prime, because it can be changed into another prime (663782213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331891121 + 331891122.

It is an arithmetic number, because the mean of its divisors is an integer number (331891122).

Almost surely, 2^663782243 is an apocalyptic number.

663782243 is a deficient number, since it is larger than the sum of its proper divisors (1).

663782243 is an equidigital number, since it uses as much as digits as its factorization.

663782243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 41.

The square root of 663782243 is about 25763.9718017234. The cubic root of 663782243 is about 872.3187552470.

The spelling of 663782243 in words is "six hundred sixty-three million, seven hundred eighty-two thousand, two hundred forty-three".