19679668 has 24 divisors (see below), whose sum is σ = 37425920. Its totient is φ = 9020160.

The previous prime is 19679663. The next prime is 19679669. The reversal of 19679668 is 86697691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19679663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1821 + ... + 6532.

Almost surely, 2^19679668 is an apocalyptic number.

It is an amenable number.

19679668 is a deficient number, since it is larger than the sum of its proper divisors (17746252).

19679668 is a wasteful number, since it uses less digits than its factorization.

19679668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8407 (or 8405 counting only the distinct ones).

The product of its digits is 979776, while the sum is 52.

The square root of 19679668 is about 4436.1771831161. The cubic root of 19679668 is about 269.9847636578.

The spelling of 19679668 in words is "nineteen million, six hundred seventy-nine thousand, six hundred sixty-eight".