166875478 has 48 divisors (see below), whose sum is σ = 319356864. Its totient is φ = 64668240.

The previous prime is 166875473. The next prime is 166875487. The reversal of 166875478 is 874578661.

166875478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166875473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 304801 + ... + 305347.

It is an arithmetic number, because the mean of its divisors is an integer number (6653268).

Almost surely, 2^166875478 is an apocalyptic number.

166875478 is a deficient number, since it is larger than the sum of its proper divisors (152481386).

166875478 is a wasteful number, since it uses less digits than its factorization.

166875478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 850 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 52.

The square root of 166875478 is about 12918.0291840513. The cubic root of 166875478 is about 550.5509388455.

The spelling of 166875478 in words is "one hundred sixty-six million, eight hundred seventy-five thousand, four hundred seventy-eight".