166427874 has 24 divisors (see below), whose sum is σ = 363231180. Its totient is φ = 55070208.

The previous prime is 166427861. The next prime is 166427881. The reversal of 166427874 is 478724661.

It can be written as a sum of positive squares in 2 ways, for example, as 151659225 + 14768649 = 12315^2 + 3843^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31279 + ... + 36210.

Almost surely, 2^166427874 is an apocalyptic number.

166427874 is an abundant number, since it is smaller than the sum of its proper divisors (196803306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166427874 is a wasteful number, since it uses less digits than its factorization.

166427874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67634 (or 67631 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 166427874 is about 12900.6927720956. The cubic root of 166427874 is about 550.0582571899.

The spelling of 166427874 in words is "one hundred sixty-six million, four hundred twenty-seven thousand, eight hundred seventy-four".