722555773 has 2 divisors, whose sum is σ = 722555774. Its totient is φ = 722555772.

The previous prime is 722555737. The next prime is 722555791. The reversal of 722555773 is 377555227.

It is a happy number.

Together with previous prime (722555737) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 451690009 + 270865764 = 21253^2 + 16458^2 .

It is a cyclic number.

It is not a de Polignac number, because 722555773 - 2⁹ = 722555261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722555173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361277886 + 361277887.

It is an arithmetic number, because the mean of its divisors is an integer number (361277887).

Almost surely, 2^722555773 is an apocalyptic number.

It is an amenable number.

722555773 is a deficient number, since it is larger than the sum of its proper divisors (1).

722555773 is an equidigital number, since it uses as much as digits as its factorization.

722555773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 514500, while the sum is 43.

The square root of 722555773 is about 26880.3975603041. The cubic root of 722555773 is about 897.3402018916.

The spelling of 722555773 in words is "seven hundred twenty-two million, five hundred fifty-five thousand, seven hundred seventy-three".