8366888681 has 2 divisors, whose sum is σ = 8366888682. Its totient is φ = 8366888680.

The previous prime is 8366888653. The next prime is 8366888683. The reversal of 8366888681 is 1868886638.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5422849600 + 2944039081 = 73640^2 + 54259^2 .

It is a cyclic number.

It is not a de Polignac number, because 8366888681 - 2⁶ = 8366888617 is a prime.

It is a super-2 number, since 2×8366888681² (a number of 21 digits) contains 22 as substring.

Together with 8366888683, 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 (8366888683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4183444340 + 4183444341.

It is an arithmetic number, because the mean of its divisors is an integer number (4183444341).

Almost surely, 2^8366888681 is an apocalyptic number.

It is an amenable number.

8366888681 is a deficient number, since it is larger than the sum of its proper divisors (1).

8366888681 is an equidigital number, since it uses as much as digits as its factorization.

8366888681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21233664, while the sum is 62.

The square root of 8366888681 is about 91470.6984831755. The cubic root of 8366888681 is about 2030.1182262674.

The spelling of 8366888681 in words is "eight billion, three hundred sixty-six million, eight hundred eighty-eight thousand, six hundred eighty-one".