16966646 has 16 divisors (see below), whose sum is σ = 27677376. Its totient is φ = 7767936.

The previous prime is 16966633. The next prime is 16966667. The reversal of 16966646 is 64666961.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16966597 and 16966606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5486 + ... + 8001.

It is an arithmetic number, because the mean of its divisors is an integer number (1729836).

Almost surely, 2^16966646 is an apocalyptic number.

16966646 is a deficient number, since it is larger than the sum of its proper divisors (10710730).

16966646 is a wasteful number, since it uses less digits than its factorization.

16966646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13543.

The product of its digits is 279936, while the sum is 44.

The square root of 16966646 is about 4119.0588730923. The cubic root of 16966646 is about 256.9598871519.

The spelling of 16966646 in words is "sixteen million, nine hundred sixty-six thousand, six hundred forty-six".