505000663 has 2 divisors, whose sum is σ = 505000664. Its totient is φ = 505000662.

The previous prime is 505000651. The next prime is 505000669. The reversal of 505000663 is 366000505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505000663 - 2¹⁷ = 504869591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505000669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252500331 + 252500332.

It is an arithmetic number, because the mean of its divisors is an integer number (252500332).

Almost surely, 2^505000663 is an apocalyptic number.

505000663 is a deficient number, since it is larger than the sum of its proper divisors (1).

505000663 is an equidigital number, since it uses as much as digits as its factorization.

505000663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 505000663 is about 22472.2198057958. The cubic root of 505000663 is about 796.3377726750.

The spelling of 505000663 in words is "five hundred five million, six hundred sixty-three", and thus it is an aban number.