604309 has 2 divisors, whose sum is σ = 604310. Its totient is φ = 604308.

The previous prime is 604291. The next prime is 604313. The reversal of 604309 is 903406.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 555025 + 49284 = 745^2 + 222^2 .

It is a cyclic number.

It is not a de Polignac number, because 604309 - 2⁵ = 604277 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 604309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (604319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302154 + 302155.

It is an arithmetic number, because the mean of its divisors is an integer number (302155).

2⁶⁰⁴³⁰⁹ is an apocalyptic number.

It is an amenable number.

604309 is a deficient number, since it is larger than the sum of its proper divisors (1).

604309 is an equidigital number, since it uses as much as digits as its factorization.

604309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 604309 is about 777.3731407760. The cubic root of 604309 is about 84.5446935118.

The spelling of 604309 in words is "six hundred four thousand, three hundred nine".