726775 has 12 divisors (see below), whose sum is σ = 1030192. Its totient is φ = 498240.

The previous prime is 726751. The next prime is 726779. The reversal of 726775 is 577627.

It is not a de Polignac number, because 726775 - 2⁷ = 726647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 726775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726779) 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 in 11 ways as a sum of consecutive naturals, for example, 1902 + ... + 2251.

2⁷²⁶⁷⁷⁵ is an apocalyptic number.

726775 is a deficient number, since it is larger than the sum of its proper divisors (303417).

726775 is a wasteful number, since it uses less digits than its factorization.

726775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170 (or 4165 counting only the distinct ones).

The product of its digits is 20580, while the sum is 34.

The square root of 726775 is about 852.5109969965. The cubic root of 726775 is about 89.9083429010.

The spelling of 726775 in words is "seven hundred twenty-six thousand, seven hundred seventy-five".