604649 has 2 divisors, whose sum is σ = 604650. Its totient is φ = 604648.

The previous prime is 604619. The next prime is 604651. The reversal of 604649 is 946406.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 469225 + 135424 = 685^2 + 368^2 .

It is a cyclic number.

It is not a de Polignac number, because 604649 - 2¹⁶ = 539113 is a prime.

Together with 604651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (604609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302324 + 302325.

It is an arithmetic number, because the mean of its divisors is an integer number (302325).

2⁶⁰⁴⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

604649 is a deficient number, since it is larger than the sum of its proper divisors (1).

604649 is an equidigital number, since it uses as much as digits as its factorization.

604649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 604649 is about 777.5917952242. The cubic root of 604649 is about 84.5605462221.

The spelling of 604649 in words is "six hundred four thousand, six hundred forty-nine".