6528906605 has 8 divisors (see below), whose sum is σ = 8437356312. Its totient is φ = 4821346368.

The previous prime is 6528906533. The next prime is 6528906607. The reversal of 6528906605 is 5066098256.

6528906605 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 825183076 + 5703723529 = 28726^2 + 75523^2 .

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 6528906605 - 2²⁸ = 6260471149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6528906605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6528906607) 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, 50222294 + ... + 50222423.

It is an arithmetic number, because the mean of its divisors is an integer number (1054669539).

Almost surely, 2^6528906605 is an apocalyptic number.

6528906605 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6528906605 is a deficient number, since it is larger than the sum of its proper divisors (1908449707).

6528906605 is a wasteful number, since it uses less digits than its factorization.

6528906605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100444735.

The product of its (nonzero) digits is 777600, while the sum is 47.

The square root of 6528906605 is about 80801.6497665735. The cubic root of 6528906605 is about 1869.0180060583.

The spelling of 6528906605 in words is "six billion, five hundred twenty-eight million, nine hundred six thousand, six hundred five".