16668212 has 12 divisors (see below), whose sum is σ = 31821216. Its totient is φ = 7576440.

The previous prime is 16668209. The next prime is 16668229. The reversal of 16668212 is 21286661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189368 + ... + 189455.

It is an arithmetic number, because the mean of its divisors is an integer number (2651768).

Almost surely, 2^16668212 is an apocalyptic number.

It is an amenable number.

16668212 is a deficient number, since it is larger than the sum of its proper divisors (15153004).

16668212 is a wasteful number, since it uses less digits than its factorization.

16668212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378838 (or 378836 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 16668212 is about 4082.6721641592. The cubic root of 16668212 is about 255.4443719106. Note that the first 3 decimals are identical.

The spelling of 16668212 in words is "sixteen million, six hundred sixty-eight thousand, two hundred twelve".