166684120 has 32 divisors (see below), whose sum is σ = 375444720. Its totient is φ = 66601600.

The previous prime is 166684109. The next prime is 166684139. The reversal of 166684120 is 21486661.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 50439 + ... + 53641.

Almost surely, 2^166684120 is an apocalyptic number.

166684120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166684120 is an abundant number, since it is smaller than the sum of its proper divisors (208760600).

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

166684120 is a wasteful number, since it uses less digits than its factorization.

166684120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4515 (or 4511 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 166684120 is about 12910.6204343556. The cubic root of 166684120 is about 550.3404173576.

The spelling of 166684120 in words is "one hundred sixty-six million, six hundred eighty-four thousand, one hundred twenty".