13347647 has 2 divisors, whose sum is σ = 13347648. Its totient is φ = 13347646.

The previous prime is 13347643. The next prime is 13347661. The reversal of 13347647 is 74674331.

13347647 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (74674331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13347647 - 2² = 13347643 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13347641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6673823 + 6673824.

It is an arithmetic number, because the mean of its divisors is an integer number (6673824).

Almost surely, 2^13347647 is an apocalyptic number.

13347647 is a deficient number, since it is larger than the sum of its proper divisors (1).

13347647 is an equidigital number, since it uses as much as digits as its factorization.

13347647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 35.

The square root of 13347647 is about 3653.4431704900. The cubic root of 13347647 is about 237.2110435951.

The spelling of 13347647 in words is "thirteen million, three hundred forty-seven thousand, six hundred forty-seven".