13316647 has 2 divisors, whose sum is σ = 13316648. Its totient is φ = 13316646.

The previous prime is 13316623. The next prime is 13316657. The reversal of 13316647 is 74661331.

13316647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13316647 - 2¹⁹ = 12792359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13316657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6658323 + 6658324.

It is an arithmetic number, because the mean of its divisors is an integer number (6658324).

Almost surely, 2^13316647 is an apocalyptic number.

13316647 is a deficient number, since it is larger than the sum of its proper divisors (1).

13316647 is an equidigital number, since it uses as much as digits as its factorization.

13316647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 13316647 is about 3649.1981310967. The cubic root of 13316647 is about 237.0272598268.

Adding to 13316647 its reverse (74661331), we get a palindrome (87977978).

The spelling of 13316647 in words is "thirteen million, three hundred sixteen thousand, six hundred forty-seven".