65216917 has 2 divisors, whose sum is σ = 65216918. Its totient is φ = 65216916.

The previous prime is 65216897. The next prime is 65216941. The reversal of 65216917 is 71961256.

65216917 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., 40525956 + 24690961 = 6366^2 + 4969^2 .

It is a cyclic number.

It is not a de Polignac number, because 65216917 - 2¹¹ = 65214869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65216717) 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, 32608458 + 32608459.

It is an arithmetic number, because the mean of its divisors is an integer number (32608459).

Almost surely, 2^65216917 is an apocalyptic number.

It is an amenable number.

65216917 is a deficient number, since it is larger than the sum of its proper divisors (1).

65216917 is an equidigital number, since it uses as much as digits as its factorization.

65216917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 65216917 is about 8075.6991647782. The cubic root of 65216917 is about 402.5193427172.

The spelling of 65216917 in words is "sixty-five million, two hundred sixteen thousand, nine hundred seventeen".