65218193 has 2 divisors, whose sum is σ = 65218194. Its totient is φ = 65218192.

The previous prime is 65218169. The next prime is 65218253. The reversal of 65218193 is 39181256.

65218193 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., 65157184 + 61009 = 8072^2 + 247^2 .

It is a cyclic number.

It is not a de Polignac number, because 65218193 - 2¹⁶ = 65152657 is a prime.

It is not a weakly prime, because it can be changed into another prime (65218123) 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, 32609096 + 32609097.

It is an arithmetic number, because the mean of its divisors is an integer number (32609097).

Almost surely, 2^65218193 is an apocalyptic number.

It is an amenable number.

65218193 is a deficient number, since it is larger than the sum of its proper divisors (1).

65218193 is an equidigital number, since it uses as much as digits as its factorization.

65218193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 35.

The square root of 65218193 is about 8075.7781668394. The cubic root of 65218193 is about 402.5219678608.

The spelling of 65218193 in words is "sixty-five million, two hundred eighteen thousand, one hundred ninety-three".