85571713 has 4 divisors (see below), whose sum is σ = 87884500. Its totient is φ = 83258928.

The previous prime is 85571701. The next prime is 85571719. The reversal of 85571713 is 31717558.

It is the 3777-th star number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31717558 = 2 ⋅15858779.

It can be written as a sum of positive squares in 2 ways, for example, as 61591104 + 23980609 = 7848^2 + 4897^2 .

It is a cyclic number.

It is not a de Polignac number, because 85571713 - 2¹³ = 85563521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 2312749 = 85571713 / (8 + 5 + 5 + 7 + 1 + 7 + 1 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85571719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1156338 + ... + 1156411.

It is an arithmetic number, because the mean of its divisors is an integer number (21971125).

Almost surely, 2^85571713 is an apocalyptic number.

It is an amenable number.

85571713 is a deficient number, since it is larger than the sum of its proper divisors (2312787).

85571713 is a wasteful number, since it uses less digits than its factorization.

85571713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2312786.

The product of its digits is 29400, while the sum is 37.

The square root of 85571713 is about 9250.4979865951. The cubic root of 85571713 is about 440.6665397050. Note that the first 3 decimals are identical.

The spelling of 85571713 in words is "eighty-five million, five hundred seventy-one thousand, seven hundred thirteen".