605009 has 2 divisors, whose sum is σ = 605010. Its totient is φ = 605008.

The previous prime is 604997. The next prime is 605021. The reversal of 605009 is 900506.

605009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (604997) and next prime (605021).

It can be written as a sum of positive squares in only one way, i.e., 595984 + 9025 = 772^2 + 95^2 .

It is a cyclic number.

It is not a de Polignac number, because 605009 - 2⁸ = 604753 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (605039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302504 + 302505.

It is an arithmetic number, because the mean of its divisors is an integer number (302505).

2⁶⁰⁵⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

605009 is a deficient number, since it is larger than the sum of its proper divisors (1).

605009 is an equidigital number, since it uses as much as digits as its factorization.

605009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 605009 is about 777.8232447028. The cubic root of 605009 is about 84.5773249687.

The spelling of 605009 in words is "six hundred five thousand, nine".