166585180 has 24 divisors (see below), whose sum is σ = 350436240. Its totient is φ = 66518400.

The previous prime is 166585171. The next prime is 166585189. The reversal of 166585180 is 81585661.

It is an interprime number because it is at equal distance from previous prime (166585171) and next prime (166585189).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166585189) 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, 5091 + ... + 18949.

It is an arithmetic number, because the mean of its divisors is an integer number (14601510).

Almost surely, 2^166585180 is an apocalyptic number.

166585180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166585180 is an abundant number, since it is smaller than the sum of its proper divisors (183851060).

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

166585180 is a wasteful number, since it uses less digits than its factorization.

166585180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14469 (or 14467 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 166585180 is about 12906.7881364807. The cubic root of 166585180 is about 550.2315058467.

The spelling of 166585180 in words is "one hundred sixty-six million, five hundred eighty-five thousand, one hundred eighty".