605120609 has 2 divisors, whose sum is σ = 605120610. Its totient is φ = 605120608.

The previous prime is 605120603. The next prime is 605120647. The reversal of 605120609 is 906021506.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600103009 + 5017600 = 24497^2 + 2240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-605120609 is a prime.

It is not a weakly prime, because it can be changed into another prime (605120603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302560304 + 302560305.

It is an arithmetic number, because the mean of its divisors is an integer number (302560305).

Almost surely, 2^605120609 is an apocalyptic number.

It is an amenable number.

605120609 is a deficient number, since it is larger than the sum of its proper divisors (1).

605120609 is an equidigital number, since it uses as much as digits as its factorization.

605120609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 605120609 is about 24599.1993568896. The cubic root of 605120609 is about 845.8252544794.

The spelling of 605120609 in words is "six hundred five million, one hundred twenty thousand, six hundred nine".