6561875 has 10 divisors (see below), whose sum is σ = 8200500. Its totient is φ = 5249000.

The previous prime is 6561871. The next prime is 6561883. The reversal of 6561875 is 5781656.

It is a happy number.

It is not a de Polignac number, because 6561875 - 2² = 6561871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6561871) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4625 + ... + 5874.

It is an arithmetic number, because the mean of its divisors is an integer number (820050).

Almost surely, 2^6561875 is an apocalyptic number.

6561875 is a deficient number, since it is larger than the sum of its proper divisors (1638625).

6561875 is an equidigital number, since it uses as much as digits as its factorization.

6561875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10519 (or 10504 counting only the distinct ones).

The product of its digits is 50400, while the sum is 38.

The square root of 6561875 is about 2561.6157010762. The cubic root of 6561875 is about 187.2158659423.

The spelling of 6561875 in words is "six million, five hundred sixty-one thousand, eight hundred seventy-five".