6686808853 has 2 divisors, whose sum is σ = 6686808854. Its totient is φ = 6686808852.

The previous prime is 6686808851. The next prime is 6686808889. The reversal of 6686808853 is 3588086866.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3721244004 + 2965564849 = 61002^2 + 54457^2 .

It is a cyclic number.

It is not a de Polignac number, because 6686808853 - 2¹ = 6686808851 is a prime.

Together with 6686808851, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6686808851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3343404426 + 3343404427.

It is an arithmetic number, because the mean of its divisors is an integer number (3343404427).

Almost surely, 2^6686808853 is an apocalyptic number.

It is an amenable number.

6686808853 is a deficient number, since it is larger than the sum of its proper divisors (1).

6686808853 is an equidigital number, since it uses as much as digits as its factorization.

6686808853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13271040, while the sum is 58.

The square root of 6686808853 is about 81772.9102637298. The cubic root of 6686808853 is about 1883.9656043361.

The spelling of 6686808853 in words is "six billion, six hundred eighty-six million, eight hundred eight thousand, eight hundred fifty-three".