726631349 has 2 divisors, whose sum is σ = 726631350. Its totient is φ = 726631348.

The previous prime is 726631331. The next prime is 726631363. The reversal of 726631349 is 943136627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 437019025 + 289612324 = 20905^2 + 17018^2 .

It is a cyclic number.

It is not a de Polignac number, because 726631349 - 2¹⁶ = 726565813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726631309) 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, 363315674 + 363315675.

It is an arithmetic number, because the mean of its divisors is an integer number (363315675).

Almost surely, 2^726631349 is an apocalyptic number.

It is an amenable number.

726631349 is a deficient number, since it is larger than the sum of its proper divisors (1).

726631349 is an equidigital number, since it uses as much as digits as its factorization.

726631349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 41.

The square root of 726631349 is about 26956.1004041757. The cubic root of 726631349 is about 899.0241888763.

The spelling of 726631349 in words is "seven hundred twenty-six million, six hundred thirty-one thousand, three hundred forty-nine".