663528 has 16 divisors (see below), whose sum is σ = 1658880. Its totient is φ = 221168.

The previous prime is 663517. The next prime is 663529. The reversal of 663528 is 825366.

It is a junction number, because it is equal to n+sod(n) for n = 663495 and 663504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663529) by changing a digit.

663528 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 3 ways as a sum of consecutive naturals, for example, 13800 + ... + 13847.

It is an arithmetic number, because the mean of its divisors is an integer number (103680).

2⁶⁶³⁵²⁸ is an apocalyptic number.

It is an amenable number.

663528 is an abundant number, since it is smaller than the sum of its proper divisors (995352).

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

663528 is a wasteful number, since it uses less digits than its factorization.

663528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27656 (or 27652 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 663528 is about 814.5722804024. The cubic root of 663528 is about 87.2207368688.

The spelling of 663528 in words is "six hundred sixty-three thousand, five hundred twenty-eight".