605239 has 2 divisors, whose sum is σ = 605240. Its totient is φ = 605238.

The previous prime is 605237. The next prime is 605249. The reversal of 605239 is 932506.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 605239 - 2¹ = 605237 is a prime.

Together with 605237, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (605233) 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, 302619 + 302620.

It is an arithmetic number, because the mean of its divisors is an integer number (302620).

2⁶⁰⁵²³⁹ is an apocalyptic number.

605239 is a deficient number, since it is larger than the sum of its proper divisors (1).

605239 is an equidigital number, since it uses as much as digits as its factorization.

605239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 605239 is about 777.9710791540. The cubic root of 605239 is about 84.5880412391.

The spelling of 605239 in words is "six hundred five thousand, two hundred thirty-nine".