726036673 has 4 divisors (see below), whose sum is σ = 726213060. Its totient is φ = 725860288.

The previous prime is 726036671. The next prime is 726036677. The reversal of 726036673 is 376630627.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 675584064 + 50452609 = 25992^2 + 7103^2 .

It is a cyclic number.

It is not a de Polignac number, because 726036673 - 2¹ = 726036671 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 (726036671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81868 + ... + 90301.

It is an arithmetic number, because the mean of its divisors is an integer number (181553265).

Almost surely, 2^726036673 is an apocalyptic number.

It is an amenable number.

726036673 is a deficient number, since it is larger than the sum of its proper divisors (176387).

726036673 is a wasteful number, since it uses less digits than its factorization.

726036673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176386.

The product of its (nonzero) digits is 190512, while the sum is 40.

The square root of 726036673 is about 26945.0676933646. The cubic root of 726036673 is about 898.7788677689.

The spelling of 726036673 in words is "seven hundred twenty-six million, thirty-six thousand, six hundred seventy-three".