776888113 has 2 divisors, whose sum is σ = 776888114. Its totient is φ = 776888112.

The previous prime is 776888081. The next prime is 776888137. The reversal of 776888113 is 311888677.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 736145424 + 40742689 = 27132^2 + 6383^2 .

It is an emirp because it is prime and its reverse (311888677) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 776888113 - 2⁵ = 776888081 is a prime.

It is not a weakly prime, because it can be changed into another prime (776888143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388444056 + 388444057.

It is an arithmetic number, because the mean of its divisors is an integer number (388444057).

Almost surely, 2^776888113 is an apocalyptic number.

It is an amenable number.

776888113 is a deficient number, since it is larger than the sum of its proper divisors (1).

776888113 is an equidigital number, since it uses as much as digits as its factorization.

776888113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 49.

The square root of 776888113 is about 27872.7126953944. The cubic root of 776888113 is about 919.2906129656.

The spelling of 776888113 in words is "seven hundred seventy-six million, eight hundred eighty-eight thousand, one hundred thirteen".