663555223 has 2 divisors, whose sum is σ = 663555224. Its totient is φ = 663555222.

The previous prime is 663555199. The next prime is 663555229. The reversal of 663555223 is 322555366.

663555223 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 a de Polignac number, because none of the positive numbers 2^k-663555223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663555229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331777611 + 331777612.

It is an arithmetic number, because the mean of its divisors is an integer number (331777612).

Almost surely, 2^663555223 is an apocalyptic number.

663555223 is a deficient number, since it is larger than the sum of its proper divisors (1).

663555223 is an equidigital number, since it uses as much as digits as its factorization.

663555223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 37.

The square root of 663555223 is about 25759.5656601582. The cubic root of 663555223 is about 872.2192967340.

The spelling of 663555223 in words is "six hundred sixty-three million, five hundred fifty-five thousand, two hundred twenty-three".