726611089 has 4 divisors (see below), whose sum is σ = 736845120. Its totient is φ = 716377060.

The previous prime is 726611071. The next prime is 726611099. The reversal of 726611089 is 980116627.

726611089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 726611089 - 2⁷ = 726610961 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726611099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5116909 + ... + 5117050.

It is an arithmetic number, because the mean of its divisors is an integer number (184211280).

Almost surely, 2^726611089 is an apocalyptic number.

It is an amenable number.

726611089 is a deficient number, since it is larger than the sum of its proper divisors (10234031).

726611089 is a wasteful number, since it uses less digits than its factorization.

726611089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10234030.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 726611089 is about 26955.7246053598. The cubic root of 726611089 is about 899.0158332411.

The spelling of 726611089 in words is "seven hundred twenty-six million, six hundred eleven thousand, eighty-nine".