163632217 has 12 divisors (see below), whose sum is σ = 192100260. Its totient is φ = 138964896.

The previous prime is 163632197. The next prime is 163632233. The reversal of 163632217 is 712236361.

It can be written as a sum of positive squares in 2 ways, for example, as 138791961 + 24840256 = 11781^2 + 4984^2 .

It is a de Polignac number, because none of the positive numbers 2^k-163632217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163632257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9978 + ... + 20659.

It is an arithmetic number, because the mean of its divisors is an integer number (16008355).

Almost surely, 2^163632217 is an apocalyptic number.

It is an amenable number.

163632217 is a deficient number, since it is larger than the sum of its proper divisors (28468043).

163632217 is a wasteful number, since it uses less digits than its factorization.

163632217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30760 (or 30753 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 163632217 is about 12791.8809015719. The cubic root of 163632217 is about 546.9608874172.

Adding to 163632217 its reverse (712236361), we get a palindrome (875868578).

The spelling of 163632217 in words is "one hundred sixty-three million, six hundred thirty-two thousand, two hundred seventeen".