166873671 has 12 divisors (see below), whose sum is σ = 251520048. Its totient is φ = 106412064.

The previous prime is 166873667. The next prime is 166873673. The reversal of 166873671 is 176378661.

166873671 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 166873671 - 2² = 166873667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166873673) 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, 402870 + ... + 403283.

It is an arithmetic number, because the mean of its divisors is an integer number (20960004).

Almost surely, 2^166873671 is an apocalyptic number.

166873671 is a deficient number, since it is larger than the sum of its proper divisors (84646377).

166873671 is a wasteful number, since it uses less digits than its factorization.

166873671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806182 (or 806179 counting only the distinct ones).

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

The square root of 166873671 is about 12917.9592428526. The cubic root of 166873671 is about 550.5489516370.

The spelling of 166873671 in words is "one hundred sixty-six million, eight hundred seventy-three thousand, six hundred seventy-one".