12776671 has 2 divisors, whose sum is σ = 12776672. Its totient is φ = 12776670.

The previous prime is 12776641. The next prime is 12776677. The reversal of 12776671 is 17667721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12776671 - 2²³ = 4388063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12776671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12776677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6388335 + 6388336.

It is an arithmetic number, because the mean of its divisors is an integer number (6388336).

Almost surely, 2^12776671 is an apocalyptic number.

12776671 is a deficient number, since it is larger than the sum of its proper divisors (1).

12776671 is an equidigital number, since it uses as much as digits as its factorization.

12776671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24696, while the sum is 37.

The square root of 12776671 is about 3574.4469502288. The cubic root of 12776671 is about 233.7792192782.

The spelling of 12776671 in words is "twelve million, seven hundred seventy-six thousand, six hundred seventy-one".