16640166 has 16 divisors (see below), whose sum is σ = 33364800. Its totient is φ = 5532648.

The previous prime is 16640123. The next prime is 16640167. The reversal of 16640166 is 66104661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16640167) 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, 796 + ... + 5823.

It is an arithmetic number, because the mean of its divisors is an integer number (2085300).

Almost surely, 2^16640166 is an apocalyptic number.

16640166 is an abundant number, since it is smaller than the sum of its proper divisors (16724634).

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

16640166 is a wasteful number, since it uses less digits than its factorization.

16640166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7043.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 16640166 is about 4079.2359578725. The cubic root of 16640166 is about 255.3010209065.

The spelling of 16640166 in words is "sixteen million, six hundred forty thousand, one hundred sixty-six".