164460217 has 2 divisors, whose sum is σ = 164460218. Its totient is φ = 164460216.

The previous prime is 164460187. The next prime is 164460223. The reversal of 164460217 is 712064461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159668496 + 4791721 = 12636^2 + 2189^2 .

It is a cyclic number.

It is not a de Polignac number, because 164460217 - 2⁷ = 164460089 is a prime.

It is not a weakly prime, because it can be changed into another prime (164460817) 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, 82230108 + 82230109.

It is an arithmetic number, because the mean of its divisors is an integer number (82230109).

Almost surely, 2^164460217 is an apocalyptic number.

It is an amenable number.

164460217 is a deficient number, since it is larger than the sum of its proper divisors (1).

164460217 is an equidigital number, since it uses as much as digits as its factorization.

164460217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 164460217 is about 12824.2043417906. The cubic root of 164460217 is about 547.8818997546.

The spelling of 164460217 in words is "one hundred sixty-four million, four hundred sixty thousand, two hundred seventeen".