166664120 has 32 divisors (see below), whose sum is σ = 428565600. Its totient is φ = 57141888.

The previous prime is 166664119. The next prime is 166664123. The reversal of 166664120 is 21466661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166664123) 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, 297335 + ... + 297894.

It is an arithmetic number, because the mean of its divisors is an integer number (13392675).

Almost surely, 2^166664120 is an apocalyptic number.

166664120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166664120 is an abundant number, since it is smaller than the sum of its proper divisors (261901480).

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

166664120 is a wasteful number, since it uses less digits than its factorization.

166664120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595247 (or 595243 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 166664120 is about 12909.8458550054. The cubic root of 166664120 is about 550.3184051655.

It can be divided in two parts, 1666641 and 20, that added together give a palindrome (1666661).

The spelling of 166664120 in words is "one hundred sixty-six million, six hundred sixty-four thousand, one hundred twenty".