6528447617 has 4 divisors (see below), whose sum is σ = 6535172016. Its totient is φ = 6521723220.

The previous prime is 6528447571. The next prime is 6528447677. The reversal of 6528447617 is 7167448256.

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 6528447617 - 2⁶ = 6528447553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6528447677) 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, 3360743 + ... + 3362684.

It is an arithmetic number, because the mean of its divisors is an integer number (1633793004).

Almost surely, 2^6528447617 is an apocalyptic number.

It is an amenable number.

6528447617 is a deficient number, since it is larger than the sum of its proper divisors (6724399).

6528447617 is an equidigital number, since it uses as much as digits as its factorization.

6528447617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6724398.

The product of its digits is 2257920, while the sum is 50.

The square root of 6528447617 is about 80798.8095023683. The cubic root of 6528447617 is about 1868.9742071503.

The spelling of 6528447617 in words is "six billion, five hundred twenty-eight million, four hundred forty-seven thousand, six hundred seventeen".