710724221 has 2 divisors, whose sum is σ = 710724222. Its totient is φ = 710724220.

The previous prime is 710724187. The next prime is 710724227. The reversal of 710724221 is 122427017.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 681940996 + 28783225 = 26114^2 + 5365^2 .

It is an emirp because it is prime and its reverse (122427017) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-710724221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (710724227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355362110 + 355362111.

It is an arithmetic number, because the mean of its divisors is an integer number (355362111).

Almost surely, 2^710724221 is an apocalyptic number.

It is an amenable number.

710724221 is a deficient number, since it is larger than the sum of its proper divisors (1).

710724221 is an equidigital number, since it uses as much as digits as its factorization.

710724221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 710724221 is about 26659.4114901286. The cubic root of 710724221 is about 892.4153642931.

The spelling of 710724221 in words is "seven hundred ten million, seven hundred twenty-four thousand, two hundred twenty-one".