16664166 has 24 divisors (see below), whose sum is σ = 36198864. Its totient is φ = 5540400.

The previous prime is 16664161. The next prime is 16664189. The reversal of 16664166 is 66146661.

It is a self number, because there is not a number n which added to its sum of digits gives 16664166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16664161) 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, 7816 + ... + 9716.

It is an arithmetic number, because the mean of its divisors is an integer number (1508286).

Almost surely, 2^16664166 is an apocalyptic number.

16664166 is an abundant number, since it is smaller than the sum of its proper divisors (19534698).

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

16664166 is a wasteful number, since it uses less digits than its factorization.

16664166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396 (or 2393 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 16664166 is about 4082.1766252822. The cubic root of 16664166 is about 255.4237015958.

It can be divided in two parts, 1666 and 4166, that added together give a cube (5832 = 18³).

The spelling of 16664166 in words is "sixteen million, six hundred sixty-four thousand, one hundred sixty-six".