12865247 has 2 divisors, whose sum is σ = 12865248. Its totient is φ = 12865246.

The previous prime is 12865199. The next prime is 12865253. The reversal of 12865247 is 74256821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12865247 - 2¹⁴ = 12848863 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 (12865297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6432623 + 6432624.

It is an arithmetic number, because the mean of its divisors is an integer number (6432624).

Almost surely, 2^12865247 is an apocalyptic number.

12865247 is a deficient number, since it is larger than the sum of its proper divisors (1).

12865247 is an equidigital number, since it uses as much as digits as its factorization.

12865247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 35.

The square root of 12865247 is about 3586.8157187121. The cubic root of 12865247 is about 234.3182109997.

The spelling of 12865247 in words is "twelve million, eight hundred sixty-five thousand, two hundred forty-seven".