86571071 has 2 divisors, whose sum is σ = 86571072. Its totient is φ = 86571070.

The previous prime is 86571047. The next prime is 86571073. The reversal of 86571071 is 17017568.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86571071 - 2²⁶ = 19462207 is a prime.

It is a Sophie Germain prime.

Together with 86571073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86571073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43285535 + 43285536.

It is an arithmetic number, because the mean of its divisors is an integer number (43285536).

Almost surely, 2^86571071 is an apocalyptic number.

86571071 is a deficient number, since it is larger than the sum of its proper divisors (1).

86571071 is an equidigital number, since it uses as much as digits as its factorization.

86571071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 86571071 is about 9304.3576350009. The cubic root of 86571071 is about 442.3753610681.

The spelling of 86571071 in words is "eighty-six million, five hundred seventy-one thousand, seventy-one".