19966682 has 8 divisors (see below), whose sum is σ = 31526400. Its totient is φ = 9457884.

The previous prime is 19966679. The next prime is 19966699. The reversal of 19966682 is 28666991.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 262682 + ... + 262757.

It is an arithmetic number, because the mean of its divisors is an integer number (3940800).

Almost surely, 2^19966682 is an apocalyptic number.

19966682 is a deficient number, since it is larger than the sum of its proper divisors (11559718).

19966682 is a wasteful number, since it uses less digits than its factorization.

19966682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525460.

The product of its digits is 279936, while the sum is 47.

The square root of 19966682 is about 4468.4093366656. The cubic root of 19966682 is about 271.2909462704.

The spelling of 19966682 in words is "nineteen million, nine hundred sixty-six thousand, six hundred eighty-two".