505633 has 2 divisors, whose sum is σ = 505634. Its totient is φ = 505632.

The previous prime is 505619. The next prime is 505639. The reversal of 505633 is 336505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 431649 + 73984 = 657^2 + 272^2 .

It is a cyclic number.

It is not a de Polignac number, because 505633 - 2⁵ = 505601 is a prime.

It is not a weakly prime, because it can be changed into another prime (505639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252816 + 252817.

It is an arithmetic number, because the mean of its divisors is an integer number (252817).

2⁵⁰⁵⁶³³ is an apocalyptic number.

It is an amenable number.

505633 is a deficient number, since it is larger than the sum of its proper divisors (1).

505633 is an equidigital number, since it uses as much as digits as its factorization.

505633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 505633 is about 711.0787579446. The cubic root of 505633 is about 79.6670012377.

The spelling of 505633 in words is "five hundred five thousand, six hundred thirty-three".