12658643 has 2 divisors, whose sum is σ = 12658644. Its totient is φ = 12658642.

The previous prime is 12658637. The next prime is 12658649. The reversal of 12658643 is 34685621.

12658643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (12658637) and next prime (12658649).

It is a cyclic number.

It is not a de Polignac number, because 12658643 - 2¹⁸ = 12396499 is a prime.

It is not a weakly prime, because it can be changed into another prime (12658649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6329321 + 6329322.

It is an arithmetic number, because the mean of its divisors is an integer number (6329322).

Almost surely, 2^12658643 is an apocalyptic number.

12658643 is a deficient number, since it is larger than the sum of its proper divisors (1).

12658643 is an equidigital number, since it uses as much as digits as its factorization.

12658643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 35.

The square root of 12658643 is about 3557.8986775905. The cubic root of 12658643 is about 233.0571246405.

The spelling of 12658643 in words is "twelve million, six hundred fifty-eight thousand, six hundred forty-three".