65740217 has 2 divisors, whose sum is σ = 65740218. Its totient is φ = 65740216.

The previous prime is 65740211. The next prime is 65740229. The reversal of 65740217 is 71204756.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39740416 + 25999801 = 6304^2 + 5099^2 .

It is a cyclic number.

It is not a de Polignac number, because 65740217 - 2⁴ = 65740201 is a prime.

It is a super-2 number, since 2×65740217² = 8643552262414178, which contains 22 as substring.

It is a Chen prime.

It is equal to p_3881642 and since 65740217 and 3881642 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (65740211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32870108 + 32870109.

It is an arithmetic number, because the mean of its divisors is an integer number (32870109).

Almost surely, 2^65740217 is an apocalyptic number.

It is an amenable number.

65740217 is a deficient number, since it is larger than the sum of its proper divisors (1).

65740217 is an equidigital number, since it uses as much as digits as its factorization.

65740217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 65740217 is about 8108.0341020496. The cubic root of 65740217 is about 403.5930798851.

The spelling of 65740217 in words is "sixty-five million, seven hundred forty thousand, two hundred seventeen".