13245745 has 8 divisors (see below), whose sum is σ = 15987816. Its totient is φ = 10534656.

The previous prime is 13245731. The next prime is 13245809. The reversal of 13245745 is 54754231.

It can be written as a sum of positive squares in 4 ways, for example, as 400689 + 12845056 = 633^2 + 3584^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13245745 - 2⁹ = 13245233 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 6792 + ... + 8521.

It is an arithmetic number, because the mean of its divisors is an integer number (1998477).

Almost surely, 2^13245745 is an apocalyptic number.

It is an amenable number.

13245745 is a deficient number, since it is larger than the sum of its proper divisors (2742071).

13245745 is a wasteful number, since it uses less digits than its factorization.

13245745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15491.

The product of its digits is 16800, while the sum is 31.

The square root of 13245745 is about 3639.4704285102. The cubic root of 13245745 is about 236.6058418929.

Adding to 13245745 its reverse (54754231), we get a palindrome (67999976).

The spelling of 13245745 in words is "thirteen million, two hundred forty-five thousand, seven hundred forty-five".