776771113 has 2 divisors, whose sum is σ = 776771114. Its totient is φ = 776771112.

The previous prime is 776771077. The next prime is 776771131. The reversal of 776771113 is 311177677.

776771113 = 19707² + 19708².

Together with next prime (776771131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388405264 + 388365849 = 19708^2 + 19707^2 .

It is an emirp because it is prime and its reverse (311177677) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 776771113 - 2²⁹ = 239900201 is a prime.

It is not a weakly prime, because it can be changed into another prime (776771143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388385556 + 388385557.

It is an arithmetic number, because the mean of its divisors is an integer number (388385557).

Almost surely, 2^776771113 is an apocalyptic number.

776771113 is the 19708-th centered square number.

It is an amenable number.

776771113 is a deficient number, since it is larger than the sum of its proper divisors (1).

776771113 is an equidigital number, since it uses as much as digits as its factorization.

776771113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43218, while the sum is 40.

The square root of 776771113 is about 27870.6137894378. The cubic root of 776771113 is about 919.2444620035.

The spelling of 776771113 in words is "seven hundred seventy-six million, seven hundred seventy-one thousand, one hundred thirteen".