16666396 has 6 divisors (see below), whose sum is σ = 29166200. Its totient is φ = 8333196.

The previous prime is 16666381. The next prime is 16666417. The reversal of 16666396 is 69366661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2083296 + ... + 2083303.

Almost surely, 2^16666396 is an apocalyptic number.

It is an amenable number.

16666396 is a deficient number, since it is larger than the sum of its proper divisors (12499804).

16666396 is a wasteful number, since it uses less digits than its factorization.

16666396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166603 (or 4166601 counting only the distinct ones).

The product of its digits is 209952, while the sum is 43.

The square root of 16666396 is about 4082.4497547429. The cubic root of 16666396 is about 255.4350946942.

The spelling of 16666396 in words is "sixteen million, six hundred sixty-six thousand, three hundred ninety-six".