656528 has 20 divisors (see below), whose sum is σ = 1307580. Its totient is φ = 319104.

The previous prime is 656527. The next prime is 656561. The reversal of 656528 is 825656.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 262144 + 394384 = 512^2 + 628^2 .

It is a junction number, because it is equal to n+sod(n) for n = 656494 and 656503.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 656528.

It is not an unprimeable number, because it can be changed into a prime (656527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38 + ... + 1146.

It is an arithmetic number, because the mean of its divisors is an integer number (65379).

2⁶⁵⁶⁵²⁸ is an apocalyptic number.

It is an amenable number.

656528 is a deficient number, since it is larger than the sum of its proper divisors (651052).

656528 is a wasteful number, since it uses less digits than its factorization.

656528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154 (or 1148 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 656528 is about 810.2641544583. The cubic root of 656528 is about 86.9129353156.

The spelling of 656528 in words is "six hundred fifty-six thousand, five hundred twenty-eight".