8105640 has 32 divisors (see below), whose sum is σ = 24317280. Its totient is φ = 2161472.

The previous prime is 8105639. The next prime is 8105653. The reversal of 8105640 is 465018.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 8105640.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33654 + ... + 33893.

It is an arithmetic number, because the mean of its divisors is an integer number (759915).

Almost surely, 2^8105640 is an apocalyptic number.

It is an amenable number.

8105640 is an abundant number, since it is smaller than the sum of its proper divisors (16211640).

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

8105640 is a wasteful number, since it uses less digits than its factorization.

8105640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67561 (or 67557 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 8105640 is about 2847.0405687310. The cubic root of 8105640 is about 200.8764865785.

The spelling of 8105640 in words is "eight million, one hundred five thousand, six hundred forty".