722548313 has 2 divisors, whose sum is σ = 722548314. Its totient is φ = 722548312.

The previous prime is 722548261. The next prime is 722548319. The reversal of 722548313 is 313845227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 673506304 + 49042009 = 25952^2 + 7003^2 .

It is an emirp because it is prime and its reverse (313845227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722548313 - 2¹⁰ = 722547289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (722548319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361274156 + 361274157.

It is an arithmetic number, because the mean of its divisors is an integer number (361274157).

Almost surely, 2^722548313 is an apocalyptic number.

It is an amenable number.

722548313 is a deficient number, since it is larger than the sum of its proper divisors (1).

722548313 is an equidigital number, since it uses as much as digits as its factorization.

722548313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 35.

The square root of 722548313 is about 26880.2587971173. The cubic root of 722548313 is about 897.3371136959.

The spelling of 722548313 in words is "seven hundred twenty-two million, five hundred forty-eight thousand, three hundred thirteen".