166566040 has 32 divisors (see below), whose sum is σ = 375328080. Its totient is φ = 66527872.

The previous prime is 166566019. The next prime is 166566089. The reversal of 166566040 is 40665661.

166566040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 166565987 and 166566005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28227 + ... + 33613.

Almost surely, 2^166566040 is an apocalyptic number.

166566040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166566040 is an abundant number, since it is smaller than the sum of its proper divisors (208762040).

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

166566040 is a wasteful number, since it uses less digits than its factorization.

166566040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6171 (or 6167 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 166566040 is about 12906.0466448870. The cubic root of 166566040 is about 550.2104318745.

The spelling of 166566040 in words is "one hundred sixty-six million, five hundred sixty-six thousand, forty".