705666263 has 2 divisors, whose sum is σ = 705666264. Its totient is φ = 705666262.

The previous prime is 705666233. The next prime is 705666301. The reversal of 705666263 is 362666507.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 705666263 - 2⁸ = 705666007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 705666263.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (705666223) 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, 352833131 + 352833132.

It is an arithmetic number, because the mean of its divisors is an integer number (352833132).

Almost surely, 2^705666263 is an apocalyptic number.

705666263 is a deficient number, since it is larger than the sum of its proper divisors (1).

705666263 is an equidigital number, since it uses as much as digits as its factorization.

705666263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 41.

The square root of 705666263 is about 26564.3795899697. The cubic root of 705666263 is about 890.2933271244.

The spelling of 705666263 in words is "seven hundred five million, six hundred sixty-six thousand, two hundred sixty-three".