726558629 has 2 divisors, whose sum is σ = 726558630. Its totient is φ = 726558628.

The previous prime is 726558607. The next prime is 726558647. The reversal of 726558629 is 926855627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 421357729 + 305200900 = 20527^2 + 17470^2 .

It is an emirp because it is prime and its reverse (926855627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 726558629 - 2²⁰ = 725510053 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726558829) 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, 363279314 + 363279315.

It is an arithmetic number, because the mean of its divisors is an integer number (363279315).

Almost surely, 2^726558629 is an apocalyptic number.

It is an amenable number.

726558629 is a deficient number, since it is larger than the sum of its proper divisors (1).

726558629 is an equidigital number, since it uses as much as digits as its factorization.

726558629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 50.

The square root of 726558629 is about 26954.7515106335. The cubic root of 726558629 is about 898.9941969507.

The spelling of 726558629 in words is "seven hundred twenty-six million, five hundred fifty-eight thousand, six hundred twenty-nine".