8085640 has 32 divisors (see below), whose sum is σ = 19152000. Its totient is φ = 3063744.

The previous prime is 8085619. The next prime is 8085643. The reversal of 8085640 is 465808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8085643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4560 + ... + 6079.

It is an arithmetic number, because the mean of its divisors is an integer number (598500).

Almost surely, 2^8085640 is an apocalyptic number.

It is an amenable number.

8085640 is an abundant number, since it is smaller than the sum of its proper divisors (11066360).

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

8085640 is a wasteful number, since it uses less digits than its factorization.

8085640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10669 (or 10665 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 8085640 is about 2843.5259801873. The cubic root of 8085640 is about 200.7111351041.

The spelling of 8085640 in words is "eight million, eighty-five thousand, six hundred forty".