776463643 has 2 divisors, whose sum is σ = 776463644. Its totient is φ = 776463642.

The previous prime is 776463631. The next prime is 776463673. The reversal of 776463643 is 346364677.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 776463643 - 2²¹ = 774366491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 776463593 and 776463602.

It is not a weakly prime, because it can be changed into another prime (776463613) 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, 388231821 + 388231822.

It is an arithmetic number, because the mean of its divisors is an integer number (388231822).

Almost surely, 2^776463643 is an apocalyptic number.

776463643 is a deficient number, since it is larger than the sum of its proper divisors (1).

776463643 is an equidigital number, since it uses as much as digits as its factorization.

776463643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 46.

The square root of 776463643 is about 27865.0972185636. The cubic root of 776463643 is about 919.1231575460.

The spelling of 776463643 in words is "seven hundred seventy-six million, four hundred sixty-three thousand, six hundred forty-three".