13216066 has 16 divisors (see below), whose sum is σ = 20278368. Its totient is φ = 6458400.

The previous prime is 13216057. The next prime is 13216069. The reversal of 13216066 is 66061231.

It is a self number, because there is not a number n which added to its sum of digits gives 13216066.

It is not an unprimeable number, because it can be changed into a prime (13216069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18781 + ... + 19471.

It is an arithmetic number, because the mean of its divisors is an integer number (1267398).

Almost surely, 2^13216066 is an apocalyptic number.

13216066 is a deficient number, since it is larger than the sum of its proper divisors (7062302).

13216066 is a wasteful number, since it uses less digits than its factorization.

13216066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 13216066 is about 3635.3907630405. The cubic root of 13216066 is about 236.4289932498.

Adding to 13216066 its reverse (66061231), we get a palindrome (79277297).

The spelling of 13216066 in words is "thirteen million, two hundred sixteen thousand, sixty-six".