166065216 has 56 divisors (see below), whose sum is σ = 440436000. Its totient is φ = 55222272.

The previous prime is 166065209. The next prime is 166065217. The reversal of 166065216 is 612560661.

It is not an unprimeable number, because it can be changed into a prime (166065217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110035 + ... + 111533.

Almost surely, 2^166065216 is an apocalyptic number.

166065216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166065216 is an abundant number, since it is smaller than the sum of its proper divisors (274370784).

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

166065216 is a wasteful number, since it uses less digits than its factorization.

166065216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091 (or 2081 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 166065216 is about 12886.6293498339. The cubic root of 166065216 is about 549.6584281346.

The spelling of 166065216 in words is "one hundred sixty-six million, sixty-five thousand, two hundred sixteen".