6540868 has 6 divisors (see below), whose sum is σ = 11446526. Its totient is φ = 3270432.

The previous prime is 6540857. The next prime is 6540871. The reversal of 6540868 is 8680456.

It can be written as a sum of positive squares in only one way, i.e., 5391684 + 1149184 = 2322^2 + 1072^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 817605 + ... + 817612.

Almost surely, 2^6540868 is an apocalyptic number.

It is an amenable number.

6540868 is a deficient number, since it is larger than the sum of its proper divisors (4905658).

6540868 is a wasteful number, since it uses less digits than its factorization.

6540868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635221 (or 1635219 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 6540868 is about 2557.5120723078. The cubic root of 6540868 is about 187.0158698534.

The spelling of 6540868 in words is "six million, five hundred forty thousand, eight hundred sixty-eight".