726508 has 12 divisors (see below), whose sum is σ = 1315440. Its totient is φ = 350672.

The previous prime is 726497. The next prime is 726521. The reversal of 726508 is 805627.

It is a congruent number.

It is an unprimeable number.

726508 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 3 ways as a sum of consecutive naturals, for example, 3016 + ... + 3247.

It is an arithmetic number, because the mean of its divisors is an integer number (109620).

2⁷²⁶⁵⁰⁸ is an apocalyptic number.

It is an amenable number.

726508 is a deficient number, since it is larger than the sum of its proper divisors (588932).

726508 is a wasteful number, since it uses less digits than its factorization.

726508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6296 (or 6294 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 726508 is about 852.3543863910. The cubic root of 726508 is about 89.8973314839.

The spelling of 726508 in words is "seven hundred twenty-six thousand, five hundred eight".