12710561 has 2 divisors, whose sum is σ = 12710562. Its totient is φ = 12710560.

The previous prime is 12710557. The next prime is 12710567. The reversal of 12710561 is 16501721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7507600 + 5202961 = 2740^2 + 2281^2 .

It is a cyclic number.

It is not a de Polignac number, because 12710561 - 2² = 12710557 is a prime.

It is not a weakly prime, because it can be changed into another prime (12710567) 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, 6355280 + 6355281.

It is an arithmetic number, because the mean of its divisors is an integer number (6355281).

Almost surely, 2^12710561 is an apocalyptic number.

It is an amenable number.

12710561 is a deficient number, since it is larger than the sum of its proper divisors (1).

12710561 is an equidigital number, since it uses as much as digits as its factorization.

12710561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 12710561 is about 3565.1873723551. The cubic root of 12710561 is about 233.3753092283.

The spelling of 12710561 in words is "twelve million, seven hundred ten thousand, five hundred sixty-one".