726566 has 8 divisors (see below), whose sum is σ = 1127520. Its totient is φ = 350728.

The previous prime is 726559. The next prime is 726589. The reversal of 726566 is 665627.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6206 + ... + 6321.

It is an arithmetic number, because the mean of its divisors is an integer number (140940).

2⁷²⁶⁵⁶⁶ is an apocalyptic number.

726566 is a deficient number, since it is larger than the sum of its proper divisors (400954).

726566 is a wasteful number, since it uses less digits than its factorization.

726566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12558.

The product of its digits is 15120, while the sum is 32.

The square root of 726566 is about 852.3884091188. The cubic root of 726566 is about 89.8997237065.

The spelling of 726566 in words is "seven hundred twenty-six thousand, five hundred sixty-six".