808080817 has 2 divisors, whose sum is σ = 808080818. Its totient is φ = 808080816.

The previous prime is 808080803. The next prime is 808080821. The reversal of 808080817 is 718080808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 601181361 + 206899456 = 24519^2 + 14384^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-808080817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 808080817.

It is not a weakly prime, because it can be changed into another prime (808080017) 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, 404040408 + 404040409.

It is an arithmetic number, because the mean of its divisors is an integer number (404040409).

Almost surely, 2^808080817 is an apocalyptic number.

It is an amenable number.

808080817 is a deficient number, since it is larger than the sum of its proper divisors (1).

808080817 is an equidigital number, since it uses as much as digits as its factorization.

808080817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28672, while the sum is 40.

The square root of 808080817 is about 28426.7623376283. The cubic root of 808080817 is about 931.4329537877.

Subtracting from 808080817 its reverse (718080808), we obtain a palindrome (90000009).

The spelling of 808080817 in words is "eight hundred eight million, eighty thousand, eight hundred seventeen".