6540287 has 8 divisors (see below), whose sum is σ = 7271040. Its totient is φ = 5842080.

The previous prime is 6540277. The next prime is 6540293. The reversal of 6540287 is 7820456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6540287 - 2¹⁰ = 6539263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7712 + ... + 8517.

It is an arithmetic number, because the mean of its divisors is an integer number (908880).

Almost surely, 2^6540287 is an apocalyptic number.

6540287 is a deficient number, since it is larger than the sum of its proper divisors (730753).

6540287 is a wasteful number, since it uses less digits than its factorization.

6540287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16273.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 6540287 is about 2557.3984828337. The cubic root of 6540287 is about 187.0103323907.

The spelling of 6540287 in words is "six million, five hundred forty thousand, two hundred eighty-seven".