166646116 has 48 divisors (see below), whose sum is σ = 360715264. Its totient is φ = 65598336.

The previous prime is 166646101. The next prime is 166646119. The reversal of 166646116 is 611646661.

It is not an unprimeable number, because it can be changed into a prime (166646119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80146 + ... + 82198.

Almost surely, 2^166646116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166646116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180357632).

166646116 is an abundant number, since it is smaller than the sum of its proper divisors (194069148).

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

166646116 is a wasteful number, since it uses less digits than its factorization.

166646116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300 (or 2298 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 166646116 is about 12909.1485389239. The cubic root of 166646116 is about 550.2985882840.

The spelling of 166646116 in words is "one hundred sixty-six million, six hundred forty-six thousand, one hundred sixteen".