166841 has 2 divisors, whose sum is σ = 166842. Its totient is φ = 166840.

The previous prime is 166823. The next prime is 166843. The reversal of 166841 is 148661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156025 + 10816 = 395^2 + 104^2 .

It is a cyclic number.

It is not a de Polignac number, because 166841 - 2¹⁰ = 165817 is a prime.

Together with 166843, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 166841.

It is not a weakly prime, because it can be changed into another prime (166843) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83420 + 83421.

It is an arithmetic number, because the mean of its divisors is an integer number (83421).

2¹⁶⁶⁸⁴¹ is an apocalyptic number.

It is an amenable number.

166841 is a deficient number, since it is larger than the sum of its proper divisors (1).

166841 is an equidigital number, since it uses as much as digits as its factorization.

166841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The square root of 166841 is about 408.4617485151. The cubic root of 166841 is about 55.0513019948.

The spelling of 166841 in words is "one hundred sixty-six thousand, eight hundred forty-one".