816713329 has 2 divisors, whose sum is σ = 816713330. Its totient is φ = 816713328.

The previous prime is 816713299. The next prime is 816713357. The reversal of 816713329 is 923317618.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 727920400 + 88792929 = 26980^2 + 9423^2 .

It is a cyclic number.

It is not a de Polignac number, because 816713329 - 2⁹ = 816712817 is a prime.

It is equal to p_41961379 and since 816713329 and 41961379 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 816713291 and 816713300.

It is not a weakly prime, because it can be changed into another prime (816713389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408356664 + 408356665.

It is an arithmetic number, because the mean of its divisors is an integer number (408356665).

Almost surely, 2^816713329 is an apocalyptic number.

It is an amenable number.

816713329 is a deficient number, since it is larger than the sum of its proper divisors (1).

816713329 is an equidigital number, since it uses as much as digits as its factorization.

816713329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 816713329 is about 28578.1967415721. The cubic root of 816713329 is about 934.7379627353.

The spelling of 816713329 in words is "eight hundred sixteen million, seven hundred thirteen thousand, three hundred twenty-nine".