16686412 has 24 divisors (see below), whose sum is σ = 29850912. Its totient is φ = 8160000.

The previous prime is 16686409. The next prime is 16686419. The reversal of 16686412 is 21468661.

It is not an unprimeable number, because it can be changed into a prime (16686419) 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, 41412 + ... + 41812.

It is an arithmetic number, because the mean of its divisors is an integer number (1243788).

Almost surely, 2^16686412 is an apocalyptic number.

It is an amenable number.

16686412 is a deficient number, since it is larger than the sum of its proper divisors (13164500).

16686412 is a wasteful number, since it uses less digits than its factorization.

16686412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 607 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 16686412 is about 4084.9004883840. The cubic root of 16686412 is about 255.5373112229.

The spelling of 16686412 in words is "sixteen million, six hundred eighty-six thousand, four hundred twelve".