663322207 has 2 divisors, whose sum is σ = 663322208. Its totient is φ = 663322206.

The previous prime is 663322193. The next prime is 663322217. The reversal of 663322207 is 702223366.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-663322207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663322217) 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 as a sum of consecutive naturals, namely, 331661103 + 331661104.

It is an arithmetic number, because the mean of its divisors is an integer number (331661104).

Almost surely, 2^663322207 is an apocalyptic number.

663322207 is a deficient number, since it is larger than the sum of its proper divisors (1).

663322207 is an equidigital number, since it uses as much as digits as its factorization.

663322207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 663322207 is about 25755.0423606718. The cubic root of 663322207 is about 872.1171877512.

The spelling of 663322207 in words is "six hundred sixty-three million, three hundred twenty-two thousand, two hundred seven".