723674909 has 2 divisors, whose sum is σ = 723674910. Its totient is φ = 723674908.

The previous prime is 723674893. The next prime is 723674911. The reversal of 723674909 is 909476327.

723674909 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., 613949284 + 109725625 = 24778^2 + 10475^2 .

It is a cyclic number.

It is not a de Polignac number, because 723674909 - 2⁴ = 723674893 is a prime.

Together with 723674911, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (723634909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361837454 + 361837455.

It is an arithmetic number, because the mean of its divisors is an integer number (361837455).

Almost surely, 2^723674909 is an apocalyptic number.

It is an amenable number.

723674909 is a deficient number, since it is larger than the sum of its proper divisors (1).

723674909 is an equidigital number, since it uses as much as digits as its factorization.

723674909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 47.

The square root of 723674909 is about 26901.2064599341. The cubic root of 723674909 is about 897.8032469739.

The spelling of 723674909 in words is "seven hundred twenty-three million, six hundred seventy-four thousand, nine hundred nine".