163995217 has 2 divisors, whose sum is σ = 163995218. Its totient is φ = 163995216.

The previous prime is 163995199. The next prime is 163995259. The reversal of 163995217 is 712599361.

163995217 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., 117700801 + 46294416 = 10849^2 + 6804^2 .

It is a cyclic number.

It is not a de Polignac number, because 163995217 - 2⁷ = 163995089 is a prime.

It is not a weakly prime, because it can be changed into another prime (163995287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81997608 + 81997609.

It is an arithmetic number, because the mean of its divisors is an integer number (81997609).

Almost surely, 2^163995217 is an apocalyptic number.

It is an amenable number.

163995217 is a deficient number, since it is larger than the sum of its proper divisors (1).

163995217 is an equidigital number, since it uses as much as digits as its factorization.

163995217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 43.

The square root of 163995217 is about 12806.0617287283. The cubic root of 163995217 is about 547.3650461426.

The spelling of 163995217 in words is "one hundred sixty-three million, nine hundred ninety-five thousand, two hundred seventeen".