16680006 has 48 divisors (see below), whose sum is σ = 42841344. Its totient is φ = 4764744.

The previous prime is 16679987. The next prime is 16680019. The reversal of 16680006 is 60008661.

16680006 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 951 + ... + 5853.

It is an arithmetic number, because the mean of its divisors is an integer number (892528).

Almost surely, 2^16680006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16680006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21420672).

16680006 is an abundant number, since it is smaller than the sum of its proper divisors (26161338).

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

16680006 is an equidigital number, since it uses as much as digits as its factorization.

16680006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4927 (or 4915 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 16680006 is about 4084.1163058855. The cubic root of 16680006 is about 255.5046063382.

Adding to 16680006 its reverse (60008661), we get a palindrome (76688667).

The spelling of 16680006 in words is "sixteen million, six hundred eighty thousand, six".