723055217 has 2 divisors, whose sum is σ = 723055218. Its totient is φ = 723055216.

The previous prime is 723055211. The next prime is 723055219. The reversal of 723055217 is 712550327.

723055217 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., 598487296 + 124567921 = 24464^2 + 11161^2 .

It is a cyclic number.

It is not a de Polignac number, because 723055217 - 2¹⁰ = 723054193 is a prime.

Together with 723055219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (723055211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361527608 + 361527609.

It is an arithmetic number, because the mean of its divisors is an integer number (361527609).

Almost surely, 2^723055217 is an apocalyptic number.

It is an amenable number.

723055217 is a deficient number, since it is larger than the sum of its proper divisors (1).

723055217 is an equidigital number, since it uses as much as digits as its factorization.

723055217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 723055217 is about 26889.6860710571. The cubic root of 723055217 is about 897.5469070230.

The spelling of 723055217 in words is "seven hundred twenty-three million, fifty-five thousand, two hundred seventeen".