12662549 has 2 divisors, whose sum is σ = 12662550. Its totient is φ = 12662548.

The previous prime is 12662543. The next prime is 12662567. The reversal of 12662549 is 94526621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12376324 + 286225 = 3518^2 + 535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12662549 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 (12662543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6331274 + 6331275.

It is an arithmetic number, because the mean of its divisors is an integer number (6331275).

Almost surely, 2^12662549 is an apocalyptic number.

It is an amenable number.

12662549 is a deficient number, since it is larger than the sum of its proper divisors (1).

12662549 is an equidigital number, since it uses as much as digits as its factorization.

12662549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 12662549 is about 3558.4475547632. The cubic root of 12662549 is about 233.0810931789.

The spelling of 12662549 in words is "twelve million, six hundred sixty-two thousand, five hundred forty-nine".