166870874 has 16 divisors (see below), whose sum is σ = 259744320. Its totient is φ = 80344320.

The previous prime is 166870867. The next prime is 166870877. The reversal of 166870874 is 478078661.

It is not an unprimeable number, because it can be changed into a prime (166870877) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7559 + ... + 19770.

It is an arithmetic number, because the mean of its divisors is an integer number (16234020).

Almost surely, 2^166870874 is an apocalyptic number.

166870874 is a deficient number, since it is larger than the sum of its proper divisors (92873446).

166870874 is a wasteful number, since it uses less digits than its factorization.

166870874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27445.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 166870874 is about 12917.8509822648. The cubic root of 166870874 is about 550.5458756693.

The spelling of 166870874 in words is "one hundred sixty-six million, eight hundred seventy thousand, eight hundred seventy-four".