12777497 has 2 divisors, whose sum is σ = 12777498. Its totient is φ = 12777496.

The previous prime is 12777491. The next prime is 12777509. The reversal of 12777497 is 79477721.

12777497 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11587216 + 1190281 = 3404^2 + 1091^2 .

It is a cyclic number.

It is not a de Polignac number, because 12777497 - 2⁶ = 12777433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12777491) 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, 6388748 + 6388749.

It is an arithmetic number, because the mean of its divisors is an integer number (6388749).

Almost surely, 2^12777497 is an apocalyptic number.

It is an amenable number.

12777497 is a deficient number, since it is larger than the sum of its proper divisors (1).

12777497 is an equidigital number, since it uses as much as digits as its factorization.

12777497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172872, while the sum is 44.

The square root of 12777497 is about 3574.5624907113. The cubic root of 12777497 is about 233.7842570399.

The spelling of 12777497 in words is "twelve million, seven hundred seventy-seven thousand, four hundred ninety-seven".