80786317 has 2 divisors, whose sum is σ = 80786318. Its totient is φ = 80786316.

The previous prime is 80786291. The next prime is 80786323. The reversal of 80786317 is 71368708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63696361 + 17089956 = 7981^2 + 4134^2 .

It is a cyclic number.

It is not a de Polignac number, because 80786317 - 2¹¹ = 80784269 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80786317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80786357) 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 as a sum of consecutive naturals, namely, 40393158 + 40393159.

It is an arithmetic number, because the mean of its divisors is an integer number (40393159).

Almost surely, 2^80786317 is an apocalyptic number.

It is an amenable number.

80786317 is a deficient number, since it is larger than the sum of its proper divisors (1).

80786317 is an equidigital number, since it uses as much as digits as its factorization.

80786317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 80786317 is about 8988.1208825872. The cubic root of 80786317 is about 432.2940616900.

The spelling of 80786317 in words is "eighty million, seven hundred eighty-six thousand, three hundred seventeen".