65128097 has 2 divisors, whose sum is σ = 65128098. Its totient is φ = 65128096.

The previous prime is 65128093. The next prime is 65128109. The reversal of 65128097 is 79082156.

65128097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49056016 + 16072081 = 7004^2 + 4009^2 .

It is a cyclic number.

It is not a de Polignac number, because 65128097 - 2² = 65128093 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65128097.

It is not a weakly prime, because it can be changed into another prime (65128093) 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, 32564048 + 32564049.

It is an arithmetic number, because the mean of its divisors is an integer number (32564049).

Almost surely, 2^65128097 is an apocalyptic number.

It is an amenable number.

65128097 is a deficient number, since it is larger than the sum of its proper divisors (1).

65128097 is an equidigital number, since it uses as much as digits as its factorization.

65128097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 65128097 is about 8070.1980768752. The cubic root of 65128097 is about 402.3365271111.

The spelling of 65128097 in words is "sixty-five million, one hundred twenty-eight thousand, ninety-seven".