655806528 has 126 divisors (see below), whose sum is σ = 2035772154. Its totient is φ = 201756672.

The previous prime is 655806517. The next prime is 655806553. The reversal of 655806528 is 825608556.

655806528 is a `hidden beast` number, since 6 + 5 + 580 + 65 + 2 + 8 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 36864 + 655769664 = 192^2 + 25608^2 .

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 93976 + ... + 100712.

Almost surely, 2^655806528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655806528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1017886077).

655806528 is an abundant number, since it is smaller than the sum of its proper divisors (1379965626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

655806528 is a wasteful number, since it uses less digits than its factorization.

655806528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781 (or 6755 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The square root of 655806528 is about 25608.7197649551. The cubic root of 655806528 is about 868.8108684781.

The spelling of 655806528 in words is "six hundred fifty-five million, eight hundred six thousand, five hundred twenty-eight".