710221 has 2 divisors, whose sum is σ = 710222. Its totient is φ = 710220.

The previous prime is 710219. The next prime is 710257. The reversal of 710221 is 122017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 697225 + 12996 = 835^2 + 114^2 .

It is a cyclic number.

It is not a de Polignac number, because 710221 - 2¹ = 710219 is a prime.

Together with 710219, it forms a pair of twin primes.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (710261) 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, 355110 + 355111.

It is an arithmetic number, because the mean of its divisors is an integer number (355111).

2⁷¹⁰²²¹ is an apocalyptic number.

It is an amenable number.

710221 is a deficient number, since it is larger than the sum of its proper divisors (1).

710221 is an equidigital number, since it uses as much as digits as its factorization.

710221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 710221 is about 842.7461064876. The cubic root of 710221 is about 89.2204692713.

Adding to 710221 its reverse (122017), we get a palindrome (832238).

The spelling of 710221 in words is "seven hundred ten thousand, two hundred twenty-one", and thus it is an iban number.