704321 has 2 divisors, whose sum is σ = 704322. Its totient is φ = 704320.

The previous prime is 704309. The next prime is 704357. The reversal of 704321 is 123407.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 703921 + 400 = 839^2 + 20^2 .

It is an emirp because it is prime and its reverse (123407) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 704321 - 2¹⁸ = 442177 is a 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 704321.

It is not a weakly prime, because it can be changed into another prime (704521) 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, 352160 + 352161.

It is an arithmetic number, because the mean of its divisors is an integer number (352161).

2⁷⁰⁴³²¹ is an apocalyptic number.

It is an amenable number.

704321 is a deficient number, since it is larger than the sum of its proper divisors (1).

704321 is an equidigital number, since it uses as much as digits as its factorization.

704321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 704321 is about 839.2383451678. The cubic root of 704321 is about 88.9727223563.

Adding to 704321 its reverse (123407), we get a palindrome (827728).

The spelling of 704321 in words is "seven hundred four thousand, three hundred twenty-one", and thus it is an iban number.