13320066 has 16 divisors (see below), whose sum is σ = 27143424. Its totient is φ = 4356144.

The previous prime is 13320029. The next prime is 13320071. The reversal of 13320066 is 66002331.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20626 + ... + 21261.

It is an arithmetic number, because the mean of its divisors is an integer number (1696464).

Almost surely, 2^13320066 is an apocalyptic number.

13320066 is an abundant number, since it is smaller than the sum of its proper divisors (13823358).

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

13320066 is a wasteful number, since it uses less digits than its factorization.

13320066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41945.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 13320066 is about 3649.6665601120. Note that the first 3 decimals coincide. The cubic root of 13320066 is about 237.0475433826.

Adding to 13320066 its reverse (66002331), we get a palindrome (79322397).

The spelling of 13320066 in words is "thirteen million, three hundred twenty thousand, sixty-six".