726565 has 8 divisors (see below), whose sum is σ = 996480. Its totient is φ = 498192.

The previous prime is 726559. The next prime is 726589. The reversal of 726565 is 565627.

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 726565 - 2⁵ = 726533 is a prime.

726565 is a lucky 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 726565.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10345 + ... + 10414.

It is an arithmetic number, because the mean of its divisors is an integer number (124560).

2⁷²⁶⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

726565 is a deficient number, since it is larger than the sum of its proper divisors (269915).

726565 is a wasteful number, since it uses less digits than its factorization.

726565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20771.

The product of its digits is 12600, while the sum is 31.

The square root of 726565 is about 852.3878225315. The cubic root of 726565 is about 89.8996824624.

The spelling of 726565 in words is "seven hundred twenty-six thousand, five hundred sixty-five".