722650549 has 2 divisors, whose sum is σ = 722650550. Its totient is φ = 722650548.

The previous prime is 722650531. The next prime is 722650559. The reversal of 722650549 is 945056227.

722650549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 670551025 + 52099524 = 25895^2 + 7218^2 .

It is an emirp because it is prime and its reverse (945056227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722650549 - 2⁷ = 722650421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722650519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361325274 + 361325275.

It is an arithmetic number, because the mean of its divisors is an integer number (361325275).

Almost surely, 2^722650549 is an apocalyptic number.

It is an amenable number.

722650549 is a deficient number, since it is larger than the sum of its proper divisors (1).

722650549 is an equidigital number, since it uses as much as digits as its factorization.

722650549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 722650549 is about 26882.1604228529. The cubic root of 722650549 is about 897.3794342019.

It can be divided in two parts, 7226 and 50549, that added together give a palindrome (57775).

The spelling of 722650549 in words is "seven hundred twenty-two million, six hundred fifty thousand, five hundred forty-nine".