6516140 has 12 divisors (see below), whose sum is σ = 13683936. Its totient is φ = 2606448.

The previous prime is 6516121. The next prime is 6516149. The reversal of 6516140 is 416156.

It is not an unprimeable number, because it can be changed into a prime (6516149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162884 + ... + 162923.

It is an arithmetic number, because the mean of its divisors is an integer number (1140328).

Almost surely, 2^6516140 is an apocalyptic number.

It is an amenable number.

6516140 is an abundant number, since it is smaller than the sum of its proper divisors (7167796).

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

6516140 is a wasteful number, since it uses less digits than its factorization.

6516140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325816 (or 325814 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 6516140 is about 2552.6731087235. The cubic root of 6516140 is about 186.7798987032.

The spelling of 6516140 in words is "six million, five hundred sixteen thousand, one hundred forty".