726811 has 2 divisors, whose sum is σ = 726812. Its totient is φ = 726810.

The previous prime is 726809. The next prime is 726839. The reversal of 726811 is 118627.

726811 is nontrivially palindromic in base 16.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 726811 - 2¹ = 726809 is a prime.

Together with 726809, it forms a pair of twin primes.

726811 is a lucky number.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (726841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363405 + 363406.

It is an arithmetic number, because the mean of its divisors is an integer number (363406).

2⁷²⁶⁸¹¹ is an apocalyptic number.

726811 is a deficient number, since it is larger than the sum of its proper divisors (1).

726811 is an equidigital number, since it uses as much as digits as its factorization.

726811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 25.

The square root of 726811 is about 852.5321108322. The cubic root of 726811 is about 89.9098273801.

The spelling of 726811 in words is "seven hundred twenty-six thousand, eight hundred eleven".