85471684 has 12 divisors (see below), whose sum is σ = 151256700. Its totient is φ = 42255488.

The previous prime is 85471679. The next prime is 85471691. The reversal of 85471684 is 48617458.

It can be written as a sum of positive squares in 2 ways, for example, as 12744900 + 72726784 = 3570^2 + 8528^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 85471684.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119689 + ... + 120400.

It is an arithmetic number, because the mean of its divisors is an integer number (12604725).

Almost surely, 2^85471684 is an apocalyptic number.

It is an amenable number.

85471684 is a deficient number, since it is larger than the sum of its proper divisors (65785016).

85471684 is a wasteful number, since it uses less digits than its factorization.

85471684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240182 (or 240180 counting only the distinct ones).

The product of its digits is 215040, while the sum is 43.

The square root of 85471684 is about 9245.0897237398. The cubic root of 85471684 is about 440.4947671318.

The spelling of 85471684 in words is "eighty-five million, four hundred seventy-one thousand, six hundred eighty-four".