13320247 has 2 divisors, whose sum is σ = 13320248. Its totient is φ = 13320246.

The previous prime is 13320233. The next prime is 13320257. The reversal of 13320247 is 74202331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13320247 - 2¹¹ = 13318199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13320217) 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 as a sum of consecutive naturals, namely, 6660123 + 6660124.

It is an arithmetic number, because the mean of its divisors is an integer number (6660124).

Almost surely, 2^13320247 is an apocalyptic number.

13320247 is a deficient number, since it is larger than the sum of its proper divisors (1).

13320247 is an equidigital number, since it uses as much as digits as its factorization.

13320247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 13320247 is about 3649.6913568136. The cubic root of 13320247 is about 237.0486170862.

Adding to 13320247 its reverse (74202331), we get a palindrome (87522578).

The spelling of 13320247 in words is "thirteen million, three hundred twenty thousand, two hundred forty-seven".