726742669 has 2 divisors, whose sum is σ = 726742670. Its totient is φ = 726742668.

The previous prime is 726742657. The next prime is 726742691. The reversal of 726742669 is 966247627.

726742669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 721567044 + 5175625 = 26862^2 + 2275^2 .

It is a cyclic number.

It is not a de Polignac number, because 726742669 - 2⁹ = 726742157 is a prime.

It is a super-2 number, since 2×726742669² = 1056309813890487122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726742969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363371334 + 363371335.

It is an arithmetic number, because the mean of its divisors is an integer number (363371335).

Almost surely, 2^726742669 is an apocalyptic number.

It is an amenable number.

726742669 is a deficient number, since it is larger than the sum of its proper divisors (1).

726742669 is an equidigital number, since it uses as much as digits as its factorization.

726742669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 49.

The square root of 726742669 is about 26958.1651638237. The cubic root of 726742669 is about 899.0700967325.

The spelling of 726742669 in words is "seven hundred twenty-six million, seven hundred forty-two thousand, six hundred sixty-nine".