635828 has 12 divisors (see below), whose sum is σ = 1140132. Its totient is φ = 310080.

The previous prime is 635821. The next prime is 635837. The reversal of 635828 is 828536.

It can be written as a sum of positive squares in 2 ways, for example, as 85264 + 550564 = 292^2 + 742^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 635794 and 635803.

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 635828.

It is not an unprimeable number, because it can be changed into a prime (635821) by changing a digit.

635828 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, 1775 + ... + 2102.

It is an arithmetic number, because the mean of its divisors is an integer number (95011).

2⁶³⁵⁸²⁸ is an apocalyptic number.

It is an amenable number.

635828 is a deficient number, since it is larger than the sum of its proper divisors (504304).

635828 is a wasteful number, since it uses less digits than its factorization.

635828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922 (or 3920 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 635828 is about 797.3882366827. The cubic root of 635828 is about 85.9897229472.

The spelling of 635828 in words is "six hundred thirty-five thousand, eight hundred twenty-eight".