722776693 has 2 divisors, whose sum is σ = 722776694. Its totient is φ = 722776692.

The previous prime is 722776651. The next prime is 722776721. The reversal of 722776693 is 396677227.

722776693 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., 655257604 + 67519089 = 25598^2 + 8217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722776693 is a prime.

It is a super-2 number, since 2×722776693² = 1044812295888032498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722776643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361388346 + 361388347.

It is an arithmetic number, because the mean of its divisors is an integer number (361388347).

Almost surely, 2^722776693 is an apocalyptic number.

It is an amenable number.

722776693 is a deficient number, since it is larger than the sum of its proper divisors (1).

722776693 is an equidigital number, since it uses as much as digits as its factorization.

722776693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 49.

The square root of 722776693 is about 26884.5065604708. The cubic root of 722776693 is about 897.4316459039.

The spelling of 722776693 in words is "seven hundred twenty-two million, seven hundred seventy-six thousand, six hundred ninety-three".