166741 has 2 divisors, whose sum is σ = 166742. Its totient is φ = 166740.

The previous prime is 166739. The next prime is 166781. The reversal of 166741 is 147661.

It is a happy number.

166741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152100 + 14641 = 390^2 + 121^2 .

It is an emirp because it is prime and its reverse (147661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166741 - 2¹ = 166739 is a prime.

It is a super-2 number, since 2×166741² = 55605122162, which contains 22 as substring.

Together with 166739, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83370 + 83371.

It is an arithmetic number, because the mean of its divisors is an integer number (83371).

2¹⁶⁶⁷⁴¹ is an apocalyptic number.

It is an amenable number.

166741 is a deficient number, since it is larger than the sum of its proper divisors (1).

166741 is an equidigital number, since it uses as much as digits as its factorization.

166741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 25.

The square root of 166741 is about 408.3393196840. The cubic root of 166741 is about 55.0403010409.

The spelling of 166741 in words is "one hundred sixty-six thousand, seven hundred forty-one".