604261309 has 2 divisors, whose sum is σ = 604261310. Its totient is φ = 604261308.

The previous prime is 604261271. The next prime is 604261337. The reversal of 604261309 is 903162406.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 573458809 + 30802500 = 23947^2 + 5550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-604261309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (604267309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302130654 + 302130655.

It is an arithmetic number, because the mean of its divisors is an integer number (302130655).

Almost surely, 2^604261309 is an apocalyptic number.

It is an amenable number.

604261309 is a deficient number, since it is larger than the sum of its proper divisors (1).

604261309 is an equidigital number, since it uses as much as digits as its factorization.

604261309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 604261309 is about 24581.7271362287. The cubic root of 604261309 is about 845.4246941390.

The spelling of 604261309 in words is "six hundred four million, two hundred sixty-one thousand, three hundred nine".