85727447 has 24 divisors (see below), whose sum is σ = 100322064. Its totient is φ = 72943104.

The previous prime is 85727441. The next prime is 85727471. The reversal of 85727447 is 74472758.

It is not a de Polignac number, because 85727447 - 2²⁰ = 84678871 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a zygodrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 85727398 and 85727407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85727441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151988 + ... + 152550.

It is an arithmetic number, because the mean of its divisors is an integer number (4180086).

Almost surely, 2^85727447 is an apocalyptic number.

85727447 is a deficient number, since it is larger than the sum of its proper divisors (14594617).

85727447 is a wasteful number, since it uses less digits than its factorization.

85727447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 646 counting only the distinct ones).

The product of its digits is 439040, while the sum is 44.

The square root of 85727447 is about 9258.9117611089. The cubic root of 85727447 is about 440.9337042102.

The spelling of 85727447 in words is "eighty-five million, seven hundred twenty-seven thousand, four hundred forty-seven".