6528641 has 4 divisors (see below), whose sum is σ = 7461312. Its totient is φ = 5595972.

The previous prime is 6528637. The next prime is 6528649. The reversal of 6528641 is 1468256.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6528641 - 2² = 6528637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6528598 and 6528607.

It is not an unprimeable number, because it can be changed into a prime (6528649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466325 + ... + 466338.

It is an arithmetic number, because the mean of its divisors is an integer number (1865328).

Almost surely, 2^6528641 is an apocalyptic number.

It is an amenable number.

6528641 is a deficient number, since it is larger than the sum of its proper divisors (932671).

6528641 is an equidigital number, since it uses as much as digits as its factorization.

6528641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932670.

The product of its digits is 11520, while the sum is 32.

The square root of 6528641 is about 2555.1205451015. The cubic root of 6528641 is about 186.8992660964.

The spelling of 6528641 in words is "six million, five hundred twenty-eight thousand, six hundred forty-one".