722066893 has 2 divisors, whose sum is σ = 722066894. Its totient is φ = 722066892.

The previous prime is 722066869. The next prime is 722066921. The reversal of 722066893 is 398660227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 721567044 + 499849 = 26862^2 + 707^2 .

It is a cyclic number.

It is not a de Polignac number, because 722066893 - 2²¹ = 719969741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722066833) 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, 361033446 + 361033447.

It is an arithmetic number, because the mean of its divisors is an integer number (361033447).

Almost surely, 2^722066893 is an apocalyptic number.

It is an amenable number.

722066893 is a deficient number, since it is larger than the sum of its proper divisors (1).

722066893 is an equidigital number, since it uses as much as digits as its factorization.

722066893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 722066893 is about 26871.3024060986. The cubic root of 722066893 is about 897.1377766160.

The spelling of 722066893 in words is "seven hundred twenty-two million, sixty-six thousand, eight hundred ninety-three".