85708571 has 4 divisors (see below), whose sum is σ = 92301552. Its totient is φ = 79115592.

The previous prime is 85708561. The next prime is 85708621. The reversal of 85708571 is 17580758.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85708571 - 2²² = 81514267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85708501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3296471 + ... + 3296496.

It is an arithmetic number, because the mean of its divisors is an integer number (23075388).

Almost surely, 2^85708571 is an apocalyptic number.

85708571 is a deficient number, since it is larger than the sum of its proper divisors (6592981).

85708571 is a wasteful number, since it uses less digits than its factorization.

85708571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6592980.

The product of its (nonzero) digits is 78400, while the sum is 41.

The square root of 85708571 is about 9257.8923627357. The cubic root of 85708571 is about 440.9013393304.

The spelling of 85708571 in words is "eighty-five million, seven hundred eight thousand, five hundred seventy-one".