166946 has 8 divisors (see below), whose sum is σ = 269724. Its totient is φ = 77040.

The previous prime is 166931. The next prime is 166949. The reversal of 166946 is 649661.

It can be written as a sum of positive squares in 2 ways, for example, as 151321 + 15625 = 389^2 + 125^2 .

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

It is not an unprimeable number, because it can be changed into a prime (166949) by changing a digit.

166946 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, 3185 + ... + 3236.

2¹⁶⁶⁹⁴⁶ is an apocalyptic number.

166946 is a deficient number, since it is larger than the sum of its proper divisors (102778).

166946 is a wasteful number, since it uses less digits than its factorization.

166946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6436.

The product of its digits is 7776, while the sum is 32.

The square root of 166946 is about 408.5902593063. The cubic root of 166946 is about 55.0628482664.

The spelling of 166946 in words is "one hundred sixty-six thousand, nine hundred forty-six".