16668012 has 12 divisors (see below), whose sum is σ = 38892056. Its totient is φ = 5556000.

The previous prime is 16667999. The next prime is 16668013. The reversal of 16668012 is 21086661.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16668013) 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, 694489 + ... + 694512.

Almost surely, 2^16668012 is an apocalyptic number.

16668012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16668012 is an abundant number, since it is smaller than the sum of its proper divisors (22224044).

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

16668012 is a wasteful number, since it uses less digits than its factorization.

16668012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389008 (or 1389006 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 16668012 is about 4082.6476703238. The cubic root of 16668012 is about 255.4433502238.

The spelling of 16668012 in words is "sixteen million, six hundred sixty-eight thousand, twelve".