871355671 has 2 divisors, whose sum is σ = 871355672. Its totient is φ = 871355670.

The previous prime is 871355647. The next prime is 871355731. The reversal of 871355671 is 176553178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 871355671 - 2¹⁹ = 870831383 is a prime.

It is equal to p_44619658 and since 871355671 and 44619658 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (871350671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435677835 + 435677836.

It is an arithmetic number, because the mean of its divisors is an integer number (435677836).

Almost surely, 2^871355671 is an apocalyptic number.

871355671 is a deficient number, since it is larger than the sum of its proper divisors (1).

871355671 is an equidigital number, since it uses as much as digits as its factorization.

871355671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 43.

The square root of 871355671 is about 29518.7342377684. The cubic root of 871355671 is about 955.1358672952.

The spelling of 871355671 in words is "eight hundred seventy-one million, three hundred fifty-five thousand, six hundred seventy-one".