12761647 has 2 divisors, whose sum is σ = 12761648. Its totient is φ = 12761646.

The previous prime is 12761603. The next prime is 12761657. The reversal of 12761647 is 74616721.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12761647 - 2¹¹ = 12759599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12761657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6380823 + 6380824.

It is an arithmetic number, because the mean of its divisors is an integer number (6380824).

Almost surely, 2^12761647 is an apocalyptic number.

12761647 is a deficient number, since it is larger than the sum of its proper divisors (1).

12761647 is an equidigital number, since it uses as much as digits as its factorization.

12761647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 34.

The square root of 12761647 is about 3572.3447482011. The cubic root of 12761647 is about 233.6875502097.

The spelling of 12761647 in words is "twelve million, seven hundred sixty-one thousand, six hundred forty-seven".