12868787 has 2 divisors, whose sum is σ = 12868788. Its totient is φ = 12868786.

The previous prime is 12868781. The next prime is 12868811. The reversal of 12868787 is 78786821.

It is a happy number.

12868787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12868787 - 2²² = 8674483 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12868781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6434393 + 6434394.

It is an arithmetic number, because the mean of its divisors is an integer number (6434394).

Almost surely, 2^12868787 is an apocalyptic number.

12868787 is a deficient number, since it is larger than the sum of its proper divisors (1).

12868787 is an equidigital number, since it uses as much as digits as its factorization.

12868787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 301056, while the sum is 47.

The square root of 12868787 is about 3587.3091586871. The cubic root of 12868787 is about 234.3397006868.

The spelling of 12868787 in words is "twelve million, eight hundred sixty-eight thousand, seven hundred eighty-seven".