743665723 has 2 divisors, whose sum is σ = 743665724. Its totient is φ = 743665722.

The previous prime is 743665661. The next prime is 743665733. The reversal of 743665723 is 327566347.

743665723 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 is a cyclic number.

It is not a de Polignac number, because 743665723 - 2⁹ = 743665211 is a prime.

It is a super-2 number, since 2×743665723² = 1106077415130225458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 743665723.

It is not a weakly prime, because it can be changed into another prime (743665733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371832861 + 371832862.

It is an arithmetic number, because the mean of its divisors is an integer number (371832862).

Almost surely, 2^743665723 is an apocalyptic number.

743665723 is a deficient number, since it is larger than the sum of its proper divisors (1).

743665723 is an equidigital number, since it uses as much as digits as its factorization.

743665723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 43.

The square root of 743665723 is about 27270.2351108310. The cubic root of 743665723 is about 905.9952515641.

It can be divided in two parts, 74366 and 5723, that added together give a square (80089 = 283²).

The spelling of 743665723 in words is "seven hundred forty-three million, six hundred sixty-five thousand, seven hundred twenty-three".