508643 has 2 divisors, whose sum is σ = 508644. Its totient is φ = 508642.

The previous prime is 508637. The next prime is 508661. The reversal of 508643 is 346805.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 508643 - 2⁶ = 508579 is a prime.

It is not a weakly prime, because it can be changed into another prime (508693) 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, 254321 + 254322.

It is an arithmetic number, because the mean of its divisors is an integer number (254322).

2⁵⁰⁸⁶⁴³ is an apocalyptic number.

508643 is a deficient number, since it is larger than the sum of its proper divisors (1).

508643 is an equidigital number, since it uses as much as digits as its factorization.

508643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 508643 is about 713.1921199789. The cubic root of 508643 is about 79.8247727227.

The spelling of 508643 in words is "five hundred eight thousand, six hundred forty-three".