13207345 has 4 divisors (see below), whose sum is σ = 15848820. Its totient is φ = 10565872.

The previous prime is 13207343. The next prime is 13207357. The reversal of 13207345 is 54370231.

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 6190144 + 7017201 = 2488^2 + 2649^2 .

It is a cyclic number.

It is not a de Polignac number, because 13207345 - 2¹ = 13207343 is a prime.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (13207343) 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, 1320730 + ... + 1320739.

It is an arithmetic number, because the mean of its divisors is an integer number (3962205).

Almost surely, 2^13207345 is an apocalyptic number.

It is an amenable number.

13207345 is a deficient number, since it is larger than the sum of its proper divisors (2641475).

13207345 is an equidigital number, since it uses as much as digits as its factorization.

13207345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641474.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 13207345 is about 3634.1911066976. The cubic root of 13207345 is about 236.3769769904.

Adding to 13207345 its reverse (54370231), we get a palindrome (67577576).

The spelling of 13207345 in words is "thirteen million, two hundred seven thousand, three hundred forty-five".