726601693 has 2 divisors, whose sum is σ = 726601694. Its totient is φ = 726601692.

The previous prime is 726601679. The next prime is 726601741. The reversal of 726601693 is 396106627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 658076409 + 68525284 = 25653^2 + 8278^2 .

It is a cyclic number.

It is not a de Polignac number, because 726601693 - 2²⁹ = 189730781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726601613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363300846 + 363300847.

It is an arithmetic number, because the mean of its divisors is an integer number (363300847).

Almost surely, 2^726601693 is an apocalyptic number.

It is an amenable number.

726601693 is a deficient number, since it is larger than the sum of its proper divisors (1).

726601693 is an equidigital number, since it uses as much as digits as its factorization.

726601693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 726601693 is about 26955.5503189974. The cubic root of 726601693 is about 899.0119580873.

The spelling of 726601693 in words is "seven hundred twenty-six million, six hundred one thousand, six hundred ninety-three".