12756061 has 2 divisors, whose sum is σ = 12756062. Its totient is φ = 12756060.

The previous prime is 12756059. The next prime is 12756089. The reversal of 12756061 is 16065721.

It is an a-pointer prime, because the next prime (12756089) can be obtained adding 12756061 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8732025 + 4024036 = 2955^2 + 2006^2 .

It is a cyclic number.

It is not a de Polignac number, because 12756061 - 2¹ = 12756059 is a prime.

Together with 12756059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12756031) 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, 6378030 + 6378031.

It is an arithmetic number, because the mean of its divisors is an integer number (6378031).

Almost surely, 2^12756061 is an apocalyptic number.

It is an amenable number.

12756061 is a deficient number, since it is larger than the sum of its proper divisors (1).

12756061 is an equidigital number, since it uses as much as digits as its factorization.

12756061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 12756061 is about 3571.5628231910. The cubic root of 12756061 is about 233.6534488338.

The spelling of 12756061 in words is "twelve million, seven hundred fifty-six thousand, sixty-one".