705766771 has 2 divisors, whose sum is σ = 705766772. Its totient is φ = 705766770.

The previous prime is 705766759. The next prime is 705766807. The reversal of 705766771 is 177667507.

It is a weak prime.

It is an emirp because it is prime and its reverse (177667507) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-705766771 is a prime.

It is not a weakly prime, because it can be changed into another prime (705766751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352883385 + 352883386.

It is an arithmetic number, because the mean of its divisors is an integer number (352883386).

Almost surely, 2^705766771 is an apocalyptic number.

705766771 is a deficient number, since it is larger than the sum of its proper divisors (1).

705766771 is an equidigital number, since it uses as much as digits as its factorization.

705766771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432180, while the sum is 46.

The square root of 705766771 is about 26566.2713040427. The cubic root of 705766771 is about 890.3355932581.

The spelling of 705766771 in words is "seven hundred five million, seven hundred sixty-six thousand, seven hundred seventy-one".