709871 has 2 divisors, whose sum is σ = 709872. Its totient is φ = 709870.

The previous prime is 709861. The next prime is 709879. The reversal of 709871 is 178907.

It is a strong prime.

It is an emirp because it is prime and its reverse (178907) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 709871 - 2¹⁴ = 693487 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (709879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354935 + 354936.

It is an arithmetic number, because the mean of its divisors is an integer number (354936).

2⁷⁰⁹⁸⁷¹ is an apocalyptic number.

709871 is a deficient number, since it is larger than the sum of its proper divisors (1).

709871 is an equidigital number, since it uses as much as digits as its factorization.

709871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 709871 is about 842.5384264234. The cubic root of 709871 is about 89.2058107846.

The spelling of 709871 in words is "seven hundred nine thousand, eight hundred seventy-one".