6165881 has 2 divisors, whose sum is σ = 6165882. Its totient is φ = 6165880.

The previous prime is 6165857. The next prime is 6165911. The reversal of 6165881 is 1885616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4687225 + 1478656 = 2165^2 + 1216^2 .

It is a cyclic number.

It is not a de Polignac number, because 6165881 - 2¹⁴ = 6149497 is a prime.

It is a super-2 number, since 2×6165881² = 76036177012322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6165581) 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, 3082940 + 3082941.

It is an arithmetic number, because the mean of its divisors is an integer number (3082941).

Almost surely, 2^6165881 is an apocalyptic number.

It is an amenable number.

6165881 is a deficient number, since it is larger than the sum of its proper divisors (1).

6165881 is an equidigital number, since it uses as much as digits as its factorization.

6165881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 35.

The square root of 6165881 is about 2483.1192077707. The cubic root of 6165881 is about 183.3714473558.

The spelling of 6165881 in words is "six million, one hundred sixty-five thousand, eight hundred eighty-one".