6500840 has 32 divisors (see below), whose sum is σ = 14700960. Its totient is φ = 2587200.

The previous prime is 6500839. The next prime is 6500849. The reversal of 6500840 is 480056.

It is not an unprimeable number, because it can be changed into a prime (6500849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12995 + ... + 13485.

It is an arithmetic number, because the mean of its divisors is an integer number (459405).

Almost surely, 2^6500840 is an apocalyptic number.

It is an amenable number.

6500840 is an abundant number, since it is smaller than the sum of its proper divisors (8200120).

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

6500840 is a wasteful number, since it uses less digits than its factorization.

6500840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 6500840 is about 2549.6744890280. The cubic root of 6500840 is about 186.6335967494.

Adding to 6500840 its reverse (480056), we get a palindrome (6980896).

The spelling of 6500840 in words is "six million, five hundred thousand, eight hundred forty".