726266539 has 2 divisors, whose sum is σ = 726266540. Its totient is φ = 726266538.

The previous prime is 726266531. The next prime is 726266573. The reversal of 726266539 is 935662627.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 726266539 - 2³ = 726266531 is a prime.

It is not a weakly prime, because it can be changed into another prime (726266531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363133269 + 363133270.

It is an arithmetic number, because the mean of its divisors is an integer number (363133270).

Almost surely, 2^726266539 is an apocalyptic number.

726266539 is a deficient number, since it is larger than the sum of its proper divisors (1).

726266539 is an equidigital number, since it uses as much as digits as its factorization.

726266539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 46.

The square root of 726266539 is about 26949.3328117785. The cubic root of 726266539 is about 898.8737100413.

The spelling of 726266539 in words is "seven hundred twenty-six million, two hundred sixty-six thousand, five hundred thirty-nine".