64217 has 2 divisors, whose sum is σ = 64218. Its totient is φ = 64216.

The previous prime is 64189. The next prime is 64223. The reversal of 64217 is 71246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48841 + 15376 = 221^2 + 124^2 .

It is a cyclic number.

It is not a de Polignac number, because 64217 - 2⁶ = 64153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32108 + 32109.

It is an arithmetic number, because the mean of its divisors is an integer number (32109).

2⁶⁴²¹⁷ is an apocalyptic number.

It is an amenable number.

64217 is a deficient number, since it is larger than the sum of its proper divisors (1).

64217 is an equidigital number, since it uses as much as digits as its factorization.

64217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 20.

The square root of 64217 is about 253.4107337900. The cubic root of 64217 is about 40.0451573345.

The spelling of 64217 in words is "sixty-four thousand, two hundred seventeen".