16651116 has 48 divisors (see below), whose sum is σ = 43999200. Its totient is φ = 5443776.

The previous prime is 16651111. The next prime is 16651121. The reversal of 16651116 is 61115661.

16651116 is a `hidden beast` number, since 1 + 6 + 651 + 1 + 1 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (16651111) and next prime (16651121).

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

It is a self number, because there is not a number n which added to its sum of digits gives 16651116.

It is not an unprimeable number, because it can be changed into a prime (16651111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4270 + ... + 7178.

It is an arithmetic number, because the mean of its divisors is an integer number (916650).

Almost surely, 2^16651116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16651116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21999600).

16651116 is an abundant number, since it is smaller than the sum of its proper divisors (27348084).

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

16651116 is a wasteful number, since it uses less digits than its factorization.

16651116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975 (or 2967 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 16651116 is about 4080.5779002489. The cubic root of 16651116 is about 255.3570085932.

Adding to 16651116 its reverse (61115661), we get a palindrome (77766777).

The spelling of 16651116 in words is "sixteen million, six hundred fifty-one thousand, one hundred sixteen".