705438887 has 2 divisors, whose sum is σ = 705438888. Its totient is φ = 705438886.

The previous prime is 705438871. The next prime is 705438901. The reversal of 705438887 is 788834507.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 705438887 - 2⁴ = 705438871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (705438857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352719443 + 352719444.

It is an arithmetic number, because the mean of its divisors is an integer number (352719444).

Almost surely, 2^705438887 is an apocalyptic number.

705438887 is a deficient number, since it is larger than the sum of its proper divisors (1).

705438887 is an equidigital number, since it uses as much as digits as its factorization.

705438887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1505280, while the sum is 50.

The square root of 705438887 is about 26560.0995291810. The cubic root of 705438887 is about 890.1976950048.

The spelling of 705438887 in words is "seven hundred five million, four hundred thirty-eight thousand, eight hundred eighty-seven".