726601 has 2 divisors, whose sum is σ = 726602. Its totient is φ = 726600.

The previous prime is 726599. The next prime is 726611. The reversal of 726601 is 106627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 585225 + 141376 = 765^2 + 376^2 .

It is an emirp because it is prime and its reverse (106627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 726601 - 2¹ = 726599 is a prime.

Together with 726599, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (726611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363300 + 363301.

It is an arithmetic number, because the mean of its divisors is an integer number (363301).

2⁷²⁶⁶⁰¹ is an apocalyptic number.

It is an amenable number.

726601 is a deficient number, since it is larger than the sum of its proper divisors (1).

726601 is an equidigital number, since it uses as much as digits as its factorization.

726601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 726601 is about 852.4089394182. The cubic root of 726601 is about 89.9011672275.

The spelling of 726601 in words is "seven hundred twenty-six thousand, six hundred one".