166636 has 6 divisors (see below), whose sum is σ = 291620. Its totient is φ = 83316.

The previous prime is 166631. The next prime is 166643. The reversal of 166636 is 636661.

166636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (166631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20826 + ... + 20833.

2¹⁶⁶⁶³⁶ is an apocalyptic number.

It is an amenable number.

166636 is a deficient number, since it is larger than the sum of its proper divisors (124984).

166636 is a wasteful number, since it uses less digits than its factorization.

166636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41663 (or 41661 counting only the distinct ones).

The product of its digits is 3888, while the sum is 28.

The square root of 166636 is about 408.2107298933. The cubic root of 166636 is about 55.0287453045.

The spelling of 166636 in words is "one hundred sixty-six thousand, six hundred thirty-six".