636528 has 40 divisors (see below), whose sum is σ = 1674000. Its totient is φ = 208384.

The previous prime is 636499. The next prime is 636533. The reversal of 636528 is 825636.

636528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 636495 and 636504.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 636528.

It is an unprimeable number.

636528 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4198 + ... + 4346.

It is an arithmetic number, because the mean of its divisors is an integer number (41850).

2⁶³⁶⁵²⁸ 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 636528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (837000).

636528 is an abundant number, since it is smaller than the sum of its proper divisors (1037472).

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

636528 is a wasteful number, since it uses less digits than its factorization.

636528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 243 counting only the distinct ones).

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

The square root of 636528 is about 797.8270489273. The cubic root of 636528 is about 86.0212675002.

The spelling of 636528 in words is "six hundred thirty-six thousand, five hundred twenty-eight".