166430666 has 8 divisors (see below), whose sum is σ = 254957760. Its totient is φ = 81444748.

The previous prime is 166430651. The next prime is 166430669. The reversal of 166430666 is 666034661.

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

It is not an unprimeable number, because it can be changed into a prime (166430669) 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, 885176 + ... + 885363.

It is an arithmetic number, because the mean of its divisors is an integer number (31869720).

Almost surely, 2^166430666 is an apocalyptic number.

166430666 is a deficient number, since it is larger than the sum of its proper divisors (88527094).

166430666 is a wasteful number, since it uses less digits than its factorization.

166430666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770588.

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 166430666 is about 12900.8009828847. The cubic root of 166430666 is about 550.0613331051.

The spelling of 166430666 in words is "one hundred sixty-six million, four hundred thirty thousand, six hundred sixty-six".