164163217 has 2 divisors, whose sum is σ = 164163218. Its totient is φ = 164163216.

The previous prime is 164163187. The next prime is 164163253. The reversal of 164163217 is 712361461.

164163217 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., 163609681 + 553536 = 12791^2 + 744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164163217 is a prime.

It is not a weakly prime, because it can be changed into another prime (164163257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82081608 + 82081609.

It is an arithmetic number, because the mean of its divisors is an integer number (82081609).

Almost surely, 2^164163217 is an apocalyptic number.

It is an amenable number.

164163217 is a deficient number, since it is larger than the sum of its proper divisors (1).

164163217 is an equidigital number, since it uses as much as digits as its factorization.

164163217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 164163217 is about 12812.6194433457. The cubic root of 164163217 is about 547.5518929428.

The spelling of 164163217 in words is "one hundred sixty-four million, one hundred sixty-three thousand, two hundred seventeen".