636104 has 32 divisors (see below), whose sum is σ = 1404480. Its totient is φ = 264384.

The previous prime is 636073. The next prime is 636107. The reversal of 636104 is 401636.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 636104.

It is not an unprimeable number, because it can be changed into a prime (636107) by changing a digit.

636104 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, 1919 + ... + 2225.

It is an arithmetic number, because the mean of its divisors is an integer number (43890).

2⁶³⁶¹⁰⁴ 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 636104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (702240).

636104 is an abundant number, since it is smaller than the sum of its proper divisors (768376).

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

636104 is a wasteful number, since it uses less digits than its factorization.

636104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 636104 is about 797.5612829119. The cubic root of 636104 is about 86.0021632771.

The spelling of 636104 in words is "six hundred thirty-six thousand, one hundred four".