663316243 has 2 divisors, whose sum is σ = 663316244. Its totient is φ = 663316242.

The previous prime is 663316177. The next prime is 663316249. The reversal of 663316243 is 342613366.

663316243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 663316243 - 2²⁹ = 126445331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 663316199 and 663316208.

It is not a weakly prime, because it can be changed into another prime (663316249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331658121 + 331658122.

It is an arithmetic number, because the mean of its divisors is an integer number (331658122).

Almost surely, 2^663316243 is an apocalyptic number.

663316243 is a deficient number, since it is larger than the sum of its proper divisors (1).

663316243 is an equidigital number, since it uses as much as digits as its factorization.

663316243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 34.

The square root of 663316243 is about 25754.9265772590. The cubic root of 663316243 is about 872.1145739774.

The spelling of 663316243 in words is "six hundred sixty-three million, three hundred sixteen thousand, two hundred forty-three".