6540655 has 24 divisors (see below), whose sum is σ = 9097200. Its totient is φ = 4498560.

The previous prime is 6540643. The next prime is 6540673. The reversal of 6540655 is 5560456.

6540655 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6540655 - 2⁵ = 6540623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11211 + ... + 11779.

It is an arithmetic number, because the mean of its divisors is an integer number (379050).

Almost surely, 2^6540655 is an apocalyptic number.

6540655 is a deficient number, since it is larger than the sum of its proper divisors (2556545).

6540655 is a wasteful number, since it uses less digits than its factorization.

6540655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 6540655 is about 2557.4704299366. The cubic root of 6540655 is about 187.0138398061.

The spelling of 6540655 in words is "six million, five hundred forty thousand, six hundred fifty-five".