12546643 has 2 divisors, whose sum is σ = 12546644. Its totient is φ = 12546642.

The previous prime is 12546619. The next prime is 12546683. The reversal of 12546643 is 34664521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12546643 is a prime.

It is not a weakly prime, because it can be changed into another prime (12546683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6273321 + 6273322.

It is an arithmetic number, because the mean of its divisors is an integer number (6273322).

Almost surely, 2^12546643 is an apocalyptic number.

12546643 is a deficient number, since it is larger than the sum of its proper divisors (1).

12546643 is an equidigital number, since it uses as much as digits as its factorization.

12546643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 31.

The square root of 12546643 is about 3542.1240802660. The cubic root of 12546643 is about 232.3677468835.

The spelling of 12546643 in words is "twelve million, five hundred forty-six thousand, six hundred forty-three".