163633 has 2 divisors, whose sum is σ = 163634. Its totient is φ = 163632.

The previous prime is 163627. The next prime is 163637. The reversal of 163633 is 336361.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91809 + 71824 = 303^2 + 268^2 .

It is an emirp because it is prime and its reverse (336361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163633 - 2⁵ = 163601 is a prime.

163633 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (163637) 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, 81816 + 81817.

It is an arithmetic number, because the mean of its divisors is an integer number (81817).

2¹⁶³⁶³³ is an apocalyptic number.

It is an amenable number.

163633 is a deficient number, since it is larger than the sum of its proper divisors (1).

163633 is an equidigital number, since it uses as much as digits as its factorization.

163633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 22.

The square root of 163633 is about 404.5157598908. The cubic root of 163633 is about 54.6961759841.

Adding to 163633 its reverse (336361), we get a palindrome (499994).

The spelling of 163633 in words is "one hundred sixty-three thousand, six hundred thirty-three".