12546749 has 2 divisors, whose sum is σ = 12546750. Its totient is φ = 12546748.

The previous prime is 12546719. The next prime is 12546767. The reversal of 12546749 is 94764521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12460900 + 85849 = 3530^2 + 293^2 .

It is an emirp because it is prime and its reverse (94764521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12546749 - 2¹² = 12542653 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12546719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6273374 + 6273375.

It is an arithmetic number, because the mean of its divisors is an integer number (6273375).

Almost surely, 2^12546749 is an apocalyptic number.

It is an amenable number.

12546749 is a deficient number, since it is larger than the sum of its proper divisors (1).

12546749 is an equidigital number, since it uses as much as digits as its factorization.

12546749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 12546749 is about 3542.1390430078. The cubic root of 12546749 is about 232.3684012661.

The spelling of 12546749 in words is "twelve million, five hundred forty-six thousand, seven hundred forty-nine".