506663 has 2 divisors, whose sum is σ = 506664. Its totient is φ = 506662.

The previous prime is 506647. The next prime is 506683. The reversal of 506663 is 366605.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 506663 - 2⁴ = 506647 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506683) 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, 253331 + 253332.

It is an arithmetic number, because the mean of its divisors is an integer number (253332).

2⁵⁰⁶⁶⁶³ is an apocalyptic number.

506663 is a deficient number, since it is larger than the sum of its proper divisors (1).

506663 is an equidigital number, since it uses as much as digits as its factorization.

506663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 506663 is about 711.8026411864. The cubic root of 506663 is about 79.7210597849.

The spelling of 506663 in words is "five hundred six thousand, six hundred sixty-three".