12646043 has 2 divisors, whose sum is σ = 12646044. Its totient is φ = 12646042.

The previous prime is 12646033. The next prime is 12646057. The reversal of 12646043 is 34064621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12646043 - 2⁶ = 12645979 is a prime.

It is not a weakly prime, because it can be changed into another prime (12646003) 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, 6323021 + 6323022.

It is an arithmetic number, because the mean of its divisors is an integer number (6323022).

Almost surely, 2^12646043 is an apocalyptic number.

12646043 is a deficient number, since it is larger than the sum of its proper divisors (1).

12646043 is an equidigital number, since it uses as much as digits as its factorization.

12646043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 12646043 is about 3556.1275286469. The cubic root of 12646043 is about 232.9797731525.

The spelling of 12646043 in words is "twelve million, six hundred forty-six thousand, forty-three".