85571984 has 10 divisors (see below), whose sum is σ = 165795750. Its totient is φ = 42785984.

The previous prime is 85571957. The next prime is 85571989. The reversal of 85571984 is 48917558.

It can be written as a sum of positive squares in only one way, i.e., 75203584 + 10368400 = 8672^2 + 3220^2 .

It is not an unprimeable number, because it can be changed into a prime (85571989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2674109 + ... + 2674140.

It is an arithmetic number, because the mean of its divisors is an integer number (16579575).

Almost surely, 2^85571984 is an apocalyptic number.

It is an amenable number.

85571984 is a deficient number, since it is larger than the sum of its proper divisors (80223766).

85571984 is a wasteful number, since it uses less digits than its factorization.

85571984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5348257 (or 5348251 counting only the distinct ones).

The product of its digits is 403200, while the sum is 47.

The square root of 85571984 is about 9250.5126344436. The cubic root of 85571984 is about 440.6670048918.

The spelling of 85571984 in words is "eighty-five million, five hundred seventy-one thousand, nine hundred eighty-four".