716321 has 2 divisors, whose sum is σ = 716322. Its totient is φ = 716320.

The previous prime is 716299. The next prime is 716351. The reversal of 716321 is 123617.

It is a happy number.

716321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 429025 + 287296 = 655^2 + 536^2 .

It is a cyclic number.

It is not a de Polignac number, because 716321 - 2⁶ = 716257 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 716293 and 716302.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 716321.

It is not a weakly prime, because it can be changed into another prime (716351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358160 + 358161.

It is an arithmetic number, because the mean of its divisors is an integer number (358161).

2⁷¹⁶³²¹ is an apocalyptic number.

It is an amenable number.

716321 is a deficient number, since it is larger than the sum of its proper divisors (1).

716321 is an equidigital number, since it uses as much as digits as its factorization.

716321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 20.

The square root of 716321 is about 846.3574894807. The cubic root of 716321 is about 89.4751759540.

Adding to 716321 its reverse (123617), we get a palindrome (839938).

Subtracting from 716321 its reverse (123617), we obtain a cube (592704 = 84³).

The spelling of 716321 in words is "seven hundred sixteen thousand, three hundred twenty-one".