12861767 has 2 divisors, whose sum is σ = 12861768. Its totient is φ = 12861766.

The previous prime is 12861743. The next prime is 12861769. The reversal of 12861767 is 76716821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12861767 - 2¹⁴ = 12845383 is a prime.

Together with 12861769, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12861767.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12861769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6430883 + 6430884.

It is an arithmetic number, because the mean of its divisors is an integer number (6430884).

Almost surely, 2^12861767 is an apocalyptic number.

12861767 is a deficient number, since it is larger than the sum of its proper divisors (1).

12861767 is an equidigital number, since it uses as much as digits as its factorization.

12861767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 38.

The square root of 12861767 is about 3586.3305759509. The cubic root of 12861767 is about 234.2970817018.

The spelling of 12861767 in words is "twelve million, eight hundred sixty-one thousand, seven hundred sixty-seven".