726779 has 2 divisors, whose sum is σ = 726780. Its totient is φ = 726778.

The previous prime is 726751. The next prime is 726787. The reversal of 726779 is 977627.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726779 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (726379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363389 + 363390.

It is an arithmetic number, because the mean of its divisors is an integer number (363390).

2⁷²⁶⁷⁷⁹ is an apocalyptic number.

726779 is a deficient number, since it is larger than the sum of its proper divisors (1).

726779 is an equidigital number, since it uses as much as digits as its factorization.

726779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37044, while the sum is 38.

The square root of 726779 is about 852.5133430041. The cubic root of 726779 is about 89.9085078455.

The spelling of 726779 in words is "seven hundred twenty-six thousand, seven hundred seventy-nine".