6889081 has 2 divisors, whose sum is σ = 6889082. Its totient is φ = 6889080.

The previous prime is 6889079. The next prime is 6889087. The reversal of 6889081 is 1809886.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5363856 + 1525225 = 2316^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 6889081 - 2¹ = 6889079 is a prime.

It is a super-2 number, since 2×6889081² = 94918874049122, which contains 22 as substring.

Together with 6889079, it forms a pair of twin primes.

6889081 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6889087) 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, 3444540 + 3444541.

It is an arithmetic number, because the mean of its divisors is an integer number (3444541).

Almost surely, 2^6889081 is an apocalyptic number.

It is an amenable number.

6889081 is a deficient number, since it is larger than the sum of its proper divisors (1).

6889081 is an equidigital number, since it uses as much as digits as its factorization.

6889081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 6889081 is about 2624.7058882854. The cubic root of 6889081 is about 190.2773511742.

The spelling of 6889081 in words is "six million, eight hundred eighty-nine thousand, eighty-one".