12768137 has 2 divisors, whose sum is σ = 12768138. Its totient is φ = 12768136.

The previous prime is 12768121. The next prime is 12768157. The reversal of 12768137 is 73186721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12222016 + 546121 = 3496^2 + 739^2 .

It is a cyclic number.

It is not a de Polignac number, because 12768137 - 2⁴ = 12768121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12768097 and 12768106.

It is not a weakly prime, because it can be changed into another prime (12768157) 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, 6384068 + 6384069.

It is an arithmetic number, because the mean of its divisors is an integer number (6384069).

Almost surely, 2^12768137 is an apocalyptic number.

It is an amenable number.

12768137 is a deficient number, since it is larger than the sum of its proper divisors (1).

12768137 is an equidigital number, since it uses as much as digits as its factorization.

12768137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 35.

The square root of 12768137 is about 3573.2529997189. The cubic root of 12768137 is about 233.7271578240.

The spelling of 12768137 in words is "twelve million, seven hundred sixty-eight thousand, one hundred thirty-seven".