12857827 has 2 divisors, whose sum is σ = 12857828. Its totient is φ = 12857826.

The previous prime is 12857791. The next prime is 12857843. The reversal of 12857827 is 72875821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12857827 - 2¹⁹ = 12333539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12857827.

It is not a weakly prime, because it can be changed into another prime (12857857) 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, 6428913 + 6428914.

It is an arithmetic number, because the mean of its divisors is an integer number (6428914).

Almost surely, 2^12857827 is an apocalyptic number.

12857827 is a deficient number, since it is larger than the sum of its proper divisors (1).

12857827 is an equidigital number, since it uses as much as digits as its factorization.

12857827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62720, while the sum is 40.

The square root of 12857827 is about 3585.7812258976. The cubic root of 12857827 is about 234.2731548499.

The spelling of 12857827 in words is "twelve million, eight hundred fifty-seven thousand, eight hundred twenty-seven".