776463613 has 2 divisors, whose sum is σ = 776463614. Its totient is φ = 776463612.

The previous prime is 776463581. The next prime is 776463631. The reversal of 776463613 is 316364677.

Together with next prime (776463631) 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., 609201124 + 167262489 = 24682^2 + 12933^2 .

It is an emirp because it is prime and its reverse (316364677) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 776463613 - 2⁵ = 776463581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 776463613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (776463643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388231806 + 388231807.

It is an arithmetic number, because the mean of its divisors is an integer number (388231807).

Almost surely, 2^776463613 is an apocalyptic number.

It is an amenable number.

776463613 is a deficient number, since it is larger than the sum of its proper divisors (1).

776463613 is an equidigital number, since it uses as much as digits as its factorization.

776463613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 43.

The square root of 776463613 is about 27865.0966802557. The cubic root of 776463613 is about 919.1231457087.

The spelling of 776463613 in words is "seven hundred seventy-six million, four hundred sixty-three thousand, six hundred thirteen".