163606 has 8 divisors (see below), whose sum is σ = 247320. Its totient is φ = 81168.

The previous prime is 163601. The next prime is 163613. The reversal of 163606 is 606361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163601) by changing a digit.

163606 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 3 ways as a sum of consecutive naturals, for example, 130 + ... + 586.

It is an arithmetic number, because the mean of its divisors is an integer number (30915).

2¹⁶³⁶⁰⁶ is an apocalyptic number.

163606 is a deficient number, since it is larger than the sum of its proper divisors (83714).

163606 is a wasteful number, since it uses less digits than its factorization.

163606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 163606 is about 404.4823852778. The cubic root of 163606 is about 54.6931674671.

Adding to 163606 its reverse (606361), we get a palindrome (769967).

The spelling of 163606 in words is "one hundred sixty-three thousand, six hundred six".