717328273 has 4 divisors (see below), whose sum is σ = 717810228. Its totient is φ = 716846320.

The previous prime is 717328267. The next prime is 717328319. The reversal of 717328273 is 372823717.

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 639482944 + 77845329 = 25288^2 + 8823^2 .

It is a cyclic number.

It is not a de Polignac number, because 717328273 - 2⁹ = 717327761 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 (717326273) 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, 238738 + ... + 241723.

It is an arithmetic number, because the mean of its divisors is an integer number (179452557).

Almost surely, 2^717328273 is an apocalyptic number.

It is an amenable number.

717328273 is a deficient number, since it is larger than the sum of its proper divisors (481955).

717328273 is a wasteful number, since it uses less digits than its factorization.

717328273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481954.

The product of its digits is 98784, while the sum is 40.

The square root of 717328273 is about 26782.9847664520. The cubic root of 717328273 is about 895.1709557644.

The spelling of 717328273 in words is "seven hundred seventeen million, three hundred twenty-eight thousand, two hundred seventy-three".