16660116 has 36 divisors (see below), whose sum is σ = 45942624. Its totient is φ = 5048400.

The previous prime is 16660109. The next prime is 16660151. The reversal of 16660116 is 61106661.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 16660116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20640 + ... + 21431.

It is an arithmetic number, because the mean of its divisors is an integer number (1276184).

Almost surely, 2^16660116 is an apocalyptic number.

It is an amenable number.

16660116 is an abundant number, since it is smaller than the sum of its proper divisors (29282508).

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

16660116 is a wasteful number, since it uses less digits than its factorization.

16660116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42092 (or 42087 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 16660116 is about 4081.6805362497. The cubic root of 16660116 is about 255.4030074948.

Adding to 16660116 its reverse (61106661), we get a palindrome (77766777).

The spelling of 16660116 in words is "sixteen million, six hundred sixty thousand, one hundred sixteen".