13006247 has 4 divisors (see below), whose sum is σ = 13571760. Its totient is φ = 12440736.

The previous prime is 13006219. The next prime is 13006249. The reversal of 13006247 is 74260031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13006247 - 2¹⁸ = 12744103 is a prime.

It is a super-2 number, since 2×13006247² = 338324922050018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 565489 = 13006247 / (1 + 3 + 0 + 0 + 6 + 2 + 4 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13006249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282722 + ... + 282767.

It is an arithmetic number, because the mean of its divisors is an integer number (3392940).

Almost surely, 2^13006247 is an apocalyptic number.

13006247 is a deficient number, since it is larger than the sum of its proper divisors (565513).

13006247 is an equidigital number, since it uses as much as digits as its factorization.

13006247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565512.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 13006247 is about 3606.4174744475. The cubic root of 13006247 is about 235.1711262992.

Adding to 13006247 its reverse (74260031), we get a palindrome (87266278).

The spelling of 13006247 in words is "thirteen million, six thousand, two hundred forty-seven".