12775487 has 2 divisors, whose sum is σ = 12775488. Its totient is φ = 12775486.

The previous prime is 12775481. The next prime is 12775489. The reversal of 12775487 is 78457721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12775487 - 2¹² = 12771391 is a prime.

Together with 12775489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12775481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6387743 + 6387744.

It is an arithmetic number, because the mean of its divisors is an integer number (6387744).

Almost surely, 2^12775487 is an apocalyptic number.

12775487 is a deficient number, since it is larger than the sum of its proper divisors (1).

12775487 is an equidigital number, since it uses as much as digits as its factorization.

12775487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109760, while the sum is 41.

The square root of 12775487 is about 3574.2813263648. The cubic root of 12775487 is about 233.7719977010.

The spelling of 12775487 in words is "twelve million, seven hundred seventy-five thousand, four hundred eighty-seven".