12776773 has 2 divisors, whose sum is σ = 12776774. Its totient is φ = 12776772.

The previous prime is 12776761. The next prime is 12776783. The reversal of 12776773 is 37767721.

12776773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9529569 + 3247204 = 3087^2 + 1802^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12776773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12776723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6388386 + 6388387.

It is an arithmetic number, because the mean of its divisors is an integer number (6388387).

Almost surely, 2^12776773 is an apocalyptic number.

It is an amenable number.

12776773 is a deficient number, since it is larger than the sum of its proper divisors (1).

12776773 is an equidigital number, since it uses as much as digits as its factorization.

12776773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86436, while the sum is 40.

The square root of 12776773 is about 3574.4612181418. The cubic root of 12776773 is about 233.7798413864.

The spelling of 12776773 in words is "twelve million, seven hundred seventy-six thousand, seven hundred seventy-three".