6540687 has 12 divisors (see below), whose sum is σ = 9667944. Its totient is φ = 4258800.

The previous prime is 6540679. The next prime is 6540691. The reversal of 6540687 is 7860456.

It is a happy number.

It is not a de Polignac number, because 6540687 - 2³ = 6540679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8064 + ... + 8837.

It is an arithmetic number, because the mean of its divisors is an integer number (805662).

Almost surely, 2^6540687 is an apocalyptic number.

6540687 is a deficient number, since it is larger than the sum of its proper divisors (3127257).

6540687 is a wasteful number, since it uses less digits than its factorization.

6540687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16950 (or 16947 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 6540687 is about 2557.4766861107. The cubic root of 6540687 is about 187.0141447926.

It can be divided in two parts, 6540 and 687, that added together give a palindrome (7227).

The spelling of 6540687 in words is "six million, five hundred forty thousand, six hundred eighty-seven".