13911066 has 72 divisors (see below), whose sum is σ = 34685820. Its totient is φ = 4013568.

The previous prime is 13911047. The next prime is 13911071. The reversal of 13911066 is 66011931.

It can be written as a sum of positive squares in 6 ways, for example, as 1058841 + 12852225 = 1029^2 + 3585^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 51580 + ... + 51848.

Almost surely, 2^13911066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13911066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17342910).

13911066 is an abundant number, since it is smaller than the sum of its proper divisors (20774754).

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

13911066 is a wasteful number, since it uses less digits than its factorization.

13911066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 13911066 is about 3729.7541473936. The cubic root of 13911066 is about 240.5028000648.

Adding to 13911066 its reverse (66011931), we get a palindrome (79922997).

The spelling of 13911066 in words is "thirteen million, nine hundred eleven thousand, sixty-six".