2665081 has 2 divisors, whose sum is σ = 2665082. Its totient is φ = 2665080.

The previous prime is 2665063. The next prime is 2665093. The reversal of 2665081 is 1805662.

2665081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2509056 + 156025 = 1584^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 2665081 - 2⁷ = 2664953 is a prime.

It is a super-2 number, since 2×2665081² = 14205313473122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2665001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332540 + 1332541.

It is an arithmetic number, because the mean of its divisors is an integer number (1332541).

2^2665081 is an apocalyptic number.

It is an amenable number.

2665081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2665081 is an equidigital number, since it uses as much as digits as its factorization.

2665081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2665081 is about 1632.5075803806. The cubic root of 2665081 is about 138.6447634239.

The spelling of 2665081 in words is "two million, six hundred sixty-five thousand, eighty-one".