65011081 has 2 divisors, whose sum is σ = 65011082. Its totient is φ = 65011080.

The previous prime is 65011073. The next prime is 65011139. The reversal of 65011081 is 18011056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40755456 + 24255625 = 6384^2 + 4925^2 .

It is a cyclic number.

It is not a de Polignac number, because 65011081 - 2³ = 65011073 is a prime.

It is a super-3 number, since 3×65011081³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (65011981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32505540 + 32505541.

It is an arithmetic number, because the mean of its divisors is an integer number (32505541).

Almost surely, 2^65011081 is an apocalyptic number.

It is an amenable number.

65011081 is a deficient number, since it is larger than the sum of its proper divisors (1).

65011081 is an equidigital number, since it uses as much as digits as its factorization.

65011081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 65011081 is about 8062.9449334595. The cubic root of 65011081 is about 402.0954225925.

The spelling of 65011081 in words is "sixty-five million, eleven thousand, eighty-one".