85707171 has 12 divisors (see below), whose sum is σ = 135053880. Its totient is φ = 51943680.

The previous prime is 85707121. The next prime is 85707173. The reversal of 85707171 is 17170758.

It is not a de Polignac number, because 85707171 - 2⁹ = 85706659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85707173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 432766 + ... + 432963.

It is an arithmetic number, because the mean of its divisors is an integer number (11254490).

Almost surely, 2^85707171 is an apocalyptic number.

85707171 is a deficient number, since it is larger than the sum of its proper divisors (49346709).

85707171 is a wasteful number, since it uses less digits than its factorization.

85707171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865746 (or 865743 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 36.

The square root of 85707171 is about 9257.8167512648. The cubic root of 85707171 is about 440.8989386945.

The spelling of 85707171 in words is "eighty-five million, seven hundred seven thousand, one hundred seventy-one".