16668984 has 16 divisors (see below), whose sum is σ = 41672520. Its totient is φ = 5556320.

The previous prime is 16668961. The next prime is 16668989. The reversal of 16668984 is 48986661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16668989) 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, 347247 + ... + 347294.

Almost surely, 2^16668984 is an apocalyptic number.

It is an amenable number.

16668984 is an abundant number, since it is smaller than the sum of its proper divisors (25003536).

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

16668984 is a wasteful number, since it uses less digits than its factorization.

16668984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694550 (or 694546 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 16668984 is about 4082.7667089855. The cubic root of 16668984 is about 255.4483155452.

The spelling of 16668984 in words is "sixteen million, six hundred sixty-eight thousand, nine hundred eighty-four".