16680568 has 16 divisors (see below), whose sum is σ = 32355000. Its totient is φ = 8052576.

The previous prime is 16680533. The next prime is 16680569. The reversal of 16680568 is 86508661.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 16680568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16680569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35718 + ... + 36181.

Almost surely, 2^16680568 is an apocalyptic number.

It is an amenable number.

16680568 is a deficient number, since it is larger than the sum of its proper divisors (15674432).

16680568 is a wasteful number, since it uses less digits than its factorization.

16680568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71934 (or 71930 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 16680568 is about 4084.1851084396. The cubic root of 16680568 is about 255.5074758811.

The spelling of 16680568 in words is "sixteen million, six hundred eighty thousand, five hundred sixty-eight".