636004 has 24 divisors (see below), whose sum is σ = 1209600. Its totient is φ = 291456.

The previous prime is 635989. The next prime is 636017. The reversal of 636004 is 400636.

It is a happy number.

It is a plaindrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3097 + ... + 3295.

It is an arithmetic number, because the mean of its divisors is an integer number (50400).

2⁶³⁶⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

636004 is a deficient number, since it is larger than the sum of its proper divisors (573596).

636004 is a wasteful number, since it uses less digits than its factorization.

636004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 636004 is about 797.4985893404. The cubic root of 636004 is about 85.9976563270.

The spelling of 636004 in words is "six hundred thirty-six thousand, four".