85708771 has 4 divisors (see below), whose sum is σ = 86495200. Its totient is φ = 84922344.

The previous prime is 85708757. The next prime is 85708783. The reversal of 85708771 is 17780758.

It is a happy number.

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 85708771 - 2¹³ = 85700579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85703771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393051 + ... + 393268.

It is an arithmetic number, because the mean of its divisors is an integer number (21623800).

Almost surely, 2^85708771 is an apocalyptic number.

85708771 is a deficient number, since it is larger than the sum of its proper divisors (786429).

85708771 is a wasteful number, since it uses less digits than its factorization.

85708771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786428.

The product of its (nonzero) digits is 109760, while the sum is 43.

The square root of 85708771 is about 9257.9031643240. The cubic root of 85708771 is about 440.9016822763.

The spelling of 85708771 in words is "eighty-five million, seven hundred eight thousand, seven hundred seventy-one".