166236 has 24 divisors (see below), whose sum is σ = 443520. Its totient is φ = 47472.

The previous prime is 166219. The next prime is 166237. The reversal of 166236 is 632661.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 166236.

It is not an unprimeable number, because it can be changed into a prime (166237) by changing a digit.

166236 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 in 7 ways as a sum of consecutive naturals, for example, 906 + ... + 1073.

It is an arithmetic number, because the mean of its divisors is an integer number (18480).

2¹⁶⁶²³⁶ is an apocalyptic number.

It is an amenable number.

166236 is an abundant number, since it is smaller than the sum of its proper divisors (277284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166236 is a wasteful number, since it uses less digits than its factorization.

166236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993 (or 1991 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

The square root of 166236 is about 407.7204924946. The cubic root of 166236 is about 54.9846789281.

Adding to 166236 its reverse (632661), we get a palindrome (798897).

The spelling of 166236 in words is "one hundred sixty-six thousand, two hundred thirty-six".