161608 has 8 divisors (see below), whose sum is σ = 303030. Its totient is φ = 80800.

The previous prime is 161599. The next prime is 161611. The reversal of 161608 is 806161.

161608 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 161604 + 4 = 402^2 + 2^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×161608² = 52234291328, which contains 22 as substring.

It is an unprimeable number.

161608 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10093 + ... + 10108.

2¹⁶¹⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

161608 is a deficient number, since it is larger than the sum of its proper divisors (141422).

161608 is a wasteful number, since it uses less digits than its factorization.

161608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20207 (or 20203 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 161608 is about 402.0049750936. The cubic root of 161608 is about 54.4696124402.

Adding to 161608 its reverse (806161), we get a palindrome (967769).

The spelling of 161608 in words is "one hundred sixty-one thousand, six hundred eight".