705408791687 has 2 divisors, whose sum is σ = 705408791688. Its totient is φ = 705408791686.

The previous prime is 705408791683. The next prime is 705408791749. The reversal of 705408791687 is 786197804507.

It is an a-pointer prime, because the next prime (705408791749) can be obtained adding 705408791687 to its sum of digits (62).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 705408791687 - 2² = 705408791683 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (705408791683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352704395843 + 352704395844.

It is an arithmetic number, because the mean of its divisors is an integer number (352704395844).

Almost surely, 2^705408791687 is an apocalyptic number.

705408791687 is a deficient number, since it is larger than the sum of its proper divisors (1).

705408791687 is an equidigital number, since it uses as much as digits as its factorization.

705408791687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23708160, while the sum is 62.

The spelling of 705408791687 in words is "seven hundred five billion, four hundred eight million, seven hundred ninety-one thousand, six hundred eighty-seven".