12755609 has 2 divisors, whose sum is σ = 12755610. Its totient is φ = 12755608.

The previous prime is 12755599. The next prime is 12755651. The reversal of 12755609 is 90655721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10259209 + 2496400 = 3203^2 + 1580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12755609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12755009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6377804 + 6377805.

It is an arithmetic number, because the mean of its divisors is an integer number (6377805).

Almost surely, 2^12755609 is an apocalyptic number.

It is an amenable number.

12755609 is a deficient number, since it is larger than the sum of its proper divisors (1).

12755609 is an equidigital number, since it uses as much as digits as its factorization.

12755609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 12755609 is about 3571.4995450091. The cubic root of 12755609 is about 233.6506890318.

The spelling of 12755609 in words is "twelve million, seven hundred fifty-five thousand, six hundred nine".