43666116 has 48 divisors (see below), whose sum is σ = 110195904. Its totient is φ = 13378176.

The previous prime is 43666097. The next prime is 43666151. The reversal of 43666116 is 61166634.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49011 + ... + 49893.

It is an arithmetic number, because the mean of its divisors is an integer number (2295748).

Almost surely, 2^43666116 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 43666116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55097952).

43666116 is an abundant number, since it is smaller than the sum of its proper divisors (66529788).

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

43666116 is a wasteful number, since it uses less digits than its factorization.

43666116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220 (or 1218 counting only the distinct ones).

The product of its digits is 15552, while the sum is 33.

The square root of 43666116 is about 6608.0342008800. The cubic root of 43666116 is about 352.1395903835.

The spelling of 43666116 in words is "forty-three million, six hundred sixty-six thousand, one hundred sixteen".