13245647 has 2 divisors, whose sum is σ = 13245648. Its totient is φ = 13245646.

The previous prime is 13245643. The next prime is 13245691. The reversal of 13245647 is 74654231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13245647 - 2² = 13245643 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13245643) by changing a digit.

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 as a sum of consecutive naturals, namely, 6622823 + 6622824.

It is an arithmetic number, because the mean of its divisors is an integer number (6622824).

Almost surely, 2^13245647 is an apocalyptic number.

13245647 is a deficient number, since it is larger than the sum of its proper divisors (1).

13245647 is an equidigital number, since it uses as much as digits as its factorization.

13245647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 32.

The square root of 13245647 is about 3639.4569649880. The cubic root of 13245647 is about 236.6052583739.

Adding to 13245647 its reverse (74654231), we get a palindrome (87899878).

The spelling of 13245647 in words is "thirteen million, two hundred forty-five thousand, six hundred forty-seven".