166588906 has 8 divisors (see below), whose sum is σ = 272600064. Its totient is φ = 75722220.

The previous prime is 166588897. The next prime is 166588907. The reversal of 166588906 is 609885661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 166588906.

It is not an unprimeable number, because it can be changed into a prime (166588907) 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, 3786090 + ... + 3786133.

It is an arithmetic number, because the mean of its divisors is an integer number (34075008).

Almost surely, 2^166588906 is an apocalyptic number.

166588906 is a deficient number, since it is larger than the sum of its proper divisors (106011158).

166588906 is a wasteful number, since it uses less digits than its factorization.

166588906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7572236.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 166588906 is about 12906.9324783234. The cubic root of 166588906 is about 550.2356081470.

The spelling of 166588906 in words is "one hundred sixty-six million, five hundred eighty-eight thousand, nine hundred six".