776516413 has 2 divisors, whose sum is σ = 776516414. Its totient is φ = 776516412.

The previous prime is 776516407. The next prime is 776516417. The reversal of 776516413 is 314615677.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 482153764 + 294362649 = 21958^2 + 17157^2 .

It is a cyclic number.

It is not a de Polignac number, because 776516413 - 2²⁵ = 742961981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (776516417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388258206 + 388258207.

It is an arithmetic number, because the mean of its divisors is an integer number (388258207).

Almost surely, 2^776516413 is an apocalyptic number.

It is an amenable number.

776516413 is a deficient number, since it is larger than the sum of its proper divisors (1).

776516413 is an equidigital number, since it uses as much as digits as its factorization.

776516413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 776516413 is about 27866.0440859480. The cubic root of 776516413 is about 919.1439788816.

The spelling of 776516413 in words is "seven hundred seventy-six million, five hundred sixteen thousand, four hundred thirteen".