8240085 has 72 divisors (see below), whose sum is σ = 17232696. Its totient is φ = 3628800.

The previous prime is 8240083. The next prime is 8240093. The reversal of 8240085 is 5800428.

It can be written as a sum of positive squares in 4 ways, for example, as 4588164 + 3651921 = 2142^2 + 1911^2 .

It is not a de Polignac number, because 8240085 - 2¹ = 8240083 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8240081) 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 71 ways as a sum of consecutive naturals, for example, 81535 + ... + 81635.

It is an arithmetic number, because the mean of its divisors is an integer number (239343).

Almost surely, 2^8240085 is an apocalyptic number.

It is an amenable number.

8240085 is an abundant number, since it is smaller than the sum of its proper divisors (8992611).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8240085 is a wasteful number, since it uses less digits than its factorization.

8240085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 8240085 is about 2870.5548244198. The cubic root of 8240085 is about 201.9810213192.

The spelling of 8240085 in words is "eight million, two hundred forty thousand, eighty-five".