6166889 has 2 divisors, whose sum is σ = 6166890. Its totient is φ = 6166888.

The previous prime is 6166883. The next prime is 6166891. The reversal of 6166889 is 9886616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6165289 + 1600 = 2483^2 + 40^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6166889 is a prime.

It is a Sophie Germain prime.

Together with 6166891, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6166883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3083444 + 3083445.

It is an arithmetic number, because the mean of its divisors is an integer number (3083445).

Almost surely, 2^6166889 is an apocalyptic number.

It is an amenable number.

6166889 is a deficient number, since it is larger than the sum of its proper divisors (1).

6166889 is an equidigital number, since it uses as much as digits as its factorization.

6166889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 44.

The square root of 6166889 is about 2483.3221699973. The cubic root of 6166889 is about 183.3814393503.

The spelling of 6166889 in words is "six million, one hundred sixty-six thousand, eight hundred eighty-nine".