13320645 has 16 divisors (see below), whose sum is σ = 22952832. Its totient is φ = 6557760.

The previous prime is 13320617. The next prime is 13320677. The reversal of 13320645 is 54602331.

It is a happy number.

13320645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13320645 - 2⁸ = 13320389 is a prime.

It is a congruent number.

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, 33961 + ... + 34350.

It is an arithmetic number, because the mean of its divisors is an integer number (1434552).

Almost surely, 2^13320645 is an apocalyptic number.

13320645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13320645 is a deficient number, since it is larger than the sum of its proper divisors (9632187).

13320645 is a wasteful number, since it uses less digits than its factorization.

13320645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68332.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 13320645 is about 3649.7458815649. The cubic root of 13320645 is about 237.0509780137.

Adding to 13320645 its reverse (54602331), we get a palindrome (67922976).

The spelling of 13320645 in words is "thirteen million, three hundred twenty thousand, six hundred forty-five".