726791 has 8 divisors (see below), whose sum is σ = 804384. Its totient is φ = 652320.

The previous prime is 726787. The next prime is 726797. The reversal of 726791 is 197627.

726791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 726791 - 2² = 726787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275 + ... + 1236.

It is an arithmetic number, because the mean of its divisors is an integer number (100548).

2⁷²⁶⁷⁹¹ is an apocalyptic number.

726791 is a deficient number, since it is larger than the sum of its proper divisors (77593).

726791 is a wasteful number, since it uses less digits than its factorization.

726791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561.

The product of its digits is 5292, while the sum is 32.

The square root of 726791 is about 852.5203809880. The cubic root of 726791 is about 89.9090026755.

The spelling of 726791 in words is "seven hundred twenty-six thousand, seven hundred ninety-one".