19697682 has 16 divisors (see below), whose sum is σ = 39453120. Its totient is φ = 6556272.

The previous prime is 19697677. The next prime is 19697707. The reversal of 19697682 is 28679691.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2944 + ... + 6932.

It is an arithmetic number, because the mean of its divisors is an integer number (2465820).

Almost surely, 2^19697682 is an apocalyptic number.

19697682 is an abundant number, since it is smaller than the sum of its proper divisors (19755438).

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

19697682 is a wasteful number, since it uses less digits than its factorization.

19697682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4817.

The product of its digits is 326592, while the sum is 48.

The square root of 19697682 is about 4438.2070704283. The cubic root of 19697682 is about 270.0671163739.

Subtracting 19697682 from its reverse (28679691), we obtain a square (8982009 = 2997²).

The spelling of 19697682 in words is "nineteen million, six hundred ninety-seven thousand, six hundred eighty-two".