726236869 has 2 divisors, whose sum is σ = 726236870. Its totient is φ = 726236868.

The previous prime is 726236857. The next prime is 726236881. The reversal of 726236869 is 968632627.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (726236857) and next prime (726236881).

It can be written as a sum of positive squares in only one way, i.e., 670136769 + 56100100 = 25887^2 + 7490^2 .

It is an emirp because it is prime and its reverse (968632627) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726236869 is a prime.

It is a super-2 number, since 2×726236869² = 1054839979789846322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726236669) 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, 363118434 + 363118435.

It is an arithmetic number, because the mean of its divisors is an integer number (363118435).

Almost surely, 2^726236869 is an apocalyptic number.

It is an amenable number.

726236869 is a deficient number, since it is larger than the sum of its proper divisors (1).

726236869 is an equidigital number, since it uses as much as digits as its factorization.

726236869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 49.

The square root of 726236869 is about 26948.7823287064. The cubic root of 726236869 is about 898.8614693809.

The spelling of 726236869 in words is "seven hundred twenty-six million, two hundred thirty-six thousand, eight hundred sixty-nine".