6540847 has 4 divisors (see below), whose sum is σ = 6648136. Its totient is φ = 6433560.

The previous prime is 6540841. The next prime is 6540857. The reversal of 6540847 is 7480456.

6540847 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6540847 - 2⁷ = 6540719 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 (6540841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53553 + ... + 53674.

It is an arithmetic number, because the mean of its divisors is an integer number (1662034).

Almost surely, 2^6540847 is an apocalyptic number.

6540847 is a deficient number, since it is larger than the sum of its proper divisors (107289).

6540847 is a wasteful number, since it uses less digits than its factorization.

6540847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107288.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 6540847 is about 2557.5079667520. The cubic root of 6540847 is about 187.0156697098.

The spelling of 6540847 in words is "six million, five hundred forty thousand, eight hundred forty-seven".