605509559 has 2 divisors, whose sum is σ = 605509560. Its totient is φ = 605509558.

The previous prime is 605509543. The next prime is 605509573. The reversal of 605509559 is 955905506.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 605509559 - 2⁴ = 605509543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (605509579) 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, 302754779 + 302754780.

It is an arithmetic number, because the mean of its divisors is an integer number (302754780).

Almost surely, 2^605509559 is an apocalyptic number.

605509559 is a deficient number, since it is larger than the sum of its proper divisors (1).

605509559 is an equidigital number, since it uses as much as digits as its factorization.

605509559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 303750, while the sum is 44.

The square root of 605509559 is about 24607.1038320238. The cubic root of 605509559 is about 846.0064377932.

The spelling of 605509559 in words is "six hundred five million, five hundred nine thousand, five hundred fifty-nine".