166116880 has 20 divisors (see below), whose sum is σ = 386221932. Its totient is φ = 66446720.

The previous prime is 166116859. The next prime is 166116883. The reversal of 166116880 is 88611661.

It is a happy number.

166116880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 93934864 + 72182016 = 9692^2 + 8496^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (166116883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1038151 + ... + 1038310.

Almost surely, 2^166116880 is an apocalyptic number.

166116880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166116880 is an abundant number, since it is smaller than the sum of its proper divisors (220105052).

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

166116880 is a wasteful number, since it uses less digits than its factorization.

166116880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2076474 (or 2076468 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 166116880 is about 12888.6337522640. The cubic root of 166116880 is about 549.7154230296.

The spelling of 166116880 in words is "one hundred sixty-six million, one hundred sixteen thousand, eight hundred eighty".