705871 has 2 divisors, whose sum is σ = 705872. Its totient is φ = 705870.

The previous prime is 705863. The next prime is 705883. The reversal of 705871 is 178507.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 705871 - 2³ = 705863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (705821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352935 + 352936.

It is an arithmetic number, because the mean of its divisors is an integer number (352936).

2⁷⁰⁵⁸⁷¹ is an apocalyptic number.

705871 is a deficient number, since it is larger than the sum of its proper divisors (1).

705871 is an equidigital number, since it uses as much as digits as its factorization.

705871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 705871 is about 840.1612940382. The cubic root of 705871 is about 89.0379419927.

The spelling of 705871 in words is "seven hundred five thousand, eight hundred seventy-one".