717089 has 2 divisors, whose sum is σ = 717090. Its totient is φ = 717088.

The previous prime is 717047. The next prime is 717091. The reversal of 717089 is 980717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 380689 + 336400 = 617^2 + 580^2 .

It is an emirp because it is prime and its reverse (980717) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-717089 is a prime.

Together with 717091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (717289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358544 + 358545.

It is an arithmetic number, because the mean of its divisors is an integer number (358545).

2⁷¹⁷⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

717089 is a deficient number, since it is larger than the sum of its proper divisors (1).

717089 is an equidigital number, since it uses as much as digits as its factorization.

717089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 717089 is about 846.8110769233. The cubic root of 717089 is about 89.5071413213.

It can be divided in two parts, 71708 and 9, that added together give a palindrome (71717).

The spelling of 717089 in words is "seven hundred seventeen thousand, eighty-nine".