166244666 has 16 divisors (see below), whose sum is σ = 301755456. Its totient is φ = 67056576.

The previous prime is 166244657. The next prime is 166244669. The reversal of 166244666 is 666442661.

166244666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (166244669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349016 + ... + 349491.

It is an arithmetic number, because the mean of its divisors is an integer number (18859716).

Almost surely, 2^166244666 is an apocalyptic number.

166244666 is a deficient number, since it is larger than the sum of its proper divisors (135510790).

166244666 is a wasteful number, since it uses less digits than its factorization.

166244666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698533.

The product of its digits is 248832, while the sum is 41.

The square root of 166244666 is about 12893.5901129205. The cubic root of 166244666 is about 549.8563437485.

The spelling of 166244666 in words is "one hundred sixty-six million, two hundred forty-four thousand, six hundred sixty-six".