166780008 has 48 divisors (see below), whose sum is σ = 452761920. Its totient is φ = 55462176.

The previous prime is 166780007. The next prime is 166780063. The reversal of 166780008 is 800087661.

166780008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166780007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30835 + ... + 35837.

It is an arithmetic number, because the mean of its divisors is an integer number (9432540).

Almost surely, 2^166780008 is an apocalyptic number.

166780008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

166780008 is an abundant number, since it is smaller than the sum of its proper divisors (285981912).

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

166780008 is a wasteful number, since it uses less digits than its factorization.

166780008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5478 (or 5471 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 166780008 is about 12914.3334322759. Note that the first 3 decimals coincide. The cubic root of 166780008 is about 550.4459281605.

The spelling of 166780008 in words is "one hundred sixty-six million, seven hundred eighty thousand, eight".