202166 has 8 divisors (see below), whose sum is σ = 305184. Its totient is φ = 100440.

The previous prime is 202129. The next prime is 202183. The reversal of 202166 is 661202.

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

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 202166.

It is an unprimeable number.

202166 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 3 ways as a sum of consecutive naturals, for example, 356 + ... + 728.

It is an arithmetic number, because the mean of its divisors is an integer number (38148).

2²⁰²¹⁶⁶ is an apocalyptic number.

202166 is a deficient number, since it is larger than the sum of its proper divisors (103018).

202166 is a wasteful number, since it uses less digits than its factorization.

202166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 202166 is about 449.6287357365. The cubic root of 202166 is about 58.6907112757.

Adding to 202166 its reverse (661202), we get a palindrome (863368).

It can be divided in two parts, 2021 and 66, that multiplied together give a triangular number (133386 = T₅₁₆).

The spelling of 202166 in words is "two hundred two thousand, one hundred sixty-six".