166671873 has 12 divisors (see below), whose sum is σ = 244829520. Its totient is φ = 109230936.

The previous prime is 166671839. The next prime is 166671887. The reversal of 166671873 is 378176661.

166671873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166671873 - 2⁶ = 166671809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166671073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156411 + ... + 157472.

It is an arithmetic number, because the mean of its divisors is an integer number (20402460).

Almost surely, 2^166671873 is an apocalyptic number.

It is an amenable number.

166671873 is a deficient number, since it is larger than the sum of its proper divisors (78157647).

166671873 is a wasteful number, since it uses less digits than its factorization.

166671873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313948 (or 313945 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 166671873 is about 12910.1461262063. The cubic root of 166671873 is about 550.3269384007.

It can be divided in two parts, 16 and 6671873, that added together give a square (6671889 = 2583²).

The spelling of 166671873 in words is "one hundred sixty-six million, six hundred seventy-one thousand, eight hundred seventy-three".