726723737 has 2 divisors, whose sum is σ = 726723738. Its totient is φ = 726723736.

The previous prime is 726723727. The next prime is 726723743. The reversal of 726723737 is 737327627.

726723737 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., 448634761 + 278088976 = 21181^2 + 16676^2 .

It is a cyclic number.

It is not a de Polignac number, because 726723737 - 2²⁴ = 709946521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (726723707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363361868 + 363361869.

It is an arithmetic number, because the mean of its divisors is an integer number (363361869).

Almost surely, 2^726723737 is an apocalyptic number.

It is an amenable number.

726723737 is a deficient number, since it is larger than the sum of its proper divisors (1).

726723737 is an equidigital number, since it uses as much as digits as its factorization.

726723737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518616, while the sum is 44.

The square root of 726723737 is about 26957.8140248797. The cubic root of 726723737 is about 899.0622895936.

The spelling of 726723737 in words is "seven hundred twenty-six million, seven hundred twenty-three thousand, seven hundred thirty-seven".