726711751 has 2 divisors, whose sum is σ = 726711752. Its totient is φ = 726711750.

The previous prime is 726711743. The next prime is 726711761. The reversal of 726711751 is 157117627.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 726711751 - 2³ = 726711743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 726711751.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726711761) 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, 363355875 + 363355876.

It is an arithmetic number, because the mean of its divisors is an integer number (363355876).

Almost surely, 2^726711751 is an apocalyptic number.

726711751 is a deficient number, since it is larger than the sum of its proper divisors (1).

726711751 is an equidigital number, since it uses as much as digits as its factorization.

726711751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20580, while the sum is 37.

The square root of 726711751 is about 26957.5917136528. The cubic root of 726711751 is about 899.0573467616.

The spelling of 726711751 in words is "seven hundred twenty-six million, seven hundred eleven thousand, seven hundred fifty-one".