13297745 has 4 divisors (see below), whose sum is σ = 15957300. Its totient is φ = 10638192.

The previous prime is 13297741. The next prime is 13297759. The reversal of 13297745 is 54779231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6723649 + 6574096 = 2593^2 + 2564^2 .

It is a cyclic number.

It is not a de Polignac number, because 13297745 - 2² = 13297741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13297699 and 13297708.

It is not an unprimeable number, because it can be changed into a prime (13297741) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1329770 + ... + 1329779.

It is an arithmetic number, because the mean of its divisors is an integer number (3989325).

Almost surely, 2^13297745 is an apocalyptic number.

It is an amenable number.

13297745 is a deficient number, since it is larger than the sum of its proper divisors (2659555).

13297745 is an equidigital number, since it uses as much as digits as its factorization.

13297745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659554.

The product of its digits is 52920, while the sum is 38.

The square root of 13297745 is about 3646.6073273661. The cubic root of 13297745 is about 236.9150591417.

The spelling of 13297745 in words is "thirteen million, two hundred ninety-seven thousand, seven hundred forty-five".