16644116 has 12 divisors (see below), whose sum is σ = 29184288. Its totient is φ = 8305752.

The previous prime is 16644113. The next prime is 16644119. The reversal of 16644116 is 61144661.

It is an interprime number because it is at equal distance from previous prime (16644113) and next prime (16644119).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16644113) 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, 1616 + ... + 5991.

It is an arithmetic number, because the mean of its divisors is an integer number (2432024).

Almost surely, 2^16644116 is an apocalyptic number.

It is an amenable number.

16644116 is a deficient number, since it is larger than the sum of its proper divisors (12540172).

16644116 is a wasteful number, since it uses less digits than its factorization.

16644116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8158 (or 8156 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 16644116 is about 4079.7200884374. The cubic root of 16644116 is about 255.3212202092.

Adding to 16644116 its reverse (61144661), we get a palindrome (77788777).

The spelling of 16644116 in words is "sixteen million, six hundred forty-four thousand, one hundred sixteen".