604609 has 2 divisors, whose sum is σ = 604610. Its totient is φ = 604608.

The previous prime is 604603. The next prime is 604613. The reversal of 604609 is 906406.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 497025 + 107584 = 705^2 + 328^2 .

It is a cyclic number.

It is not a de Polignac number, because 604609 - 2⁷ = 604481 is a prime.

It is not a weakly prime, because it can be changed into another prime (604603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302304 + 302305.

It is an arithmetic number, because the mean of its divisors is an integer number (302305).

2⁶⁰⁴⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

604609 is a deficient number, since it is larger than the sum of its proper divisors (1).

604609 is an equidigital number, since it uses as much as digits as its factorization.

604609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 604609 is about 777.5660743628. The cubic root of 604609 is about 84.5586815058.

The spelling of 604609 in words is "six hundred four thousand, six hundred nine".