726767 has 4 divisors (see below), whose sum is σ = 769536. Its totient is φ = 684000.

The previous prime is 726751. The next prime is 726779. The reversal of 726767 is 767627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 767627 = 7 ⋅109661.

It is a cyclic number.

It is not a de Polignac number, because 726767 - 2⁴ = 726751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 726767.

It is not an unprimeable number, because it can be changed into a prime (726707) 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 3 ways as a sum of consecutive naturals, for example, 21359 + ... + 21392.

It is an arithmetic number, because the mean of its divisors is an integer number (192384).

2⁷²⁶⁷⁶⁷ is an apocalyptic number.

726767 is a deficient number, since it is larger than the sum of its proper divisors (42769).

726767 is a wasteful number, since it uses less digits than its factorization.

726767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42768.

The product of its digits is 24696, while the sum is 35.

The square root of 726767 is about 852.5063049620. The cubic root of 726767 is about 89.9080130101.

The spelling of 726767 in words is "seven hundred twenty-six thousand, seven hundred sixty-seven".