705868811 has 2 divisors, whose sum is σ = 705868812. Its totient is φ = 705868810.

The previous prime is 705868789. The next prime is 705868817. The reversal of 705868811 is 118868507.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-705868811 is a prime.

It is not a weakly prime, because it can be changed into another prime (705868817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352934405 + 352934406.

It is an arithmetic number, because the mean of its divisors is an integer number (352934406).

Almost surely, 2^705868811 is an apocalyptic number.

705868811 is a deficient number, since it is larger than the sum of its proper divisors (1).

705868811 is an equidigital number, since it uses as much as digits as its factorization.

705868811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 107520, while the sum is 44.

The square root of 705868811 is about 26568.1917149060. The cubic root of 705868811 is about 890.3784995314.

It can be divided in two parts, 70586 and 8811, that added together give a palindrome (79397).

The spelling of 705868811 in words is "seven hundred five million, eight hundred sixty-eight thousand, eight hundred eleven".