636002 has 4 divisors (see below), whose sum is σ = 954006. Its totient is φ = 318000.

The previous prime is 635989. The next prime is 636017. The reversal of 636002 is 200636.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 450241 + 185761 = 671^2 + 431^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158999 + ... + 159002.

2⁶³⁶⁰⁰² is an apocalyptic number.

636002 is a deficient number, since it is larger than the sum of its proper divisors (318004).

636002 is a wasteful number, since it uses less digits than its factorization.

636002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318003.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 636002 is about 797.4973354187. The cubic root of 636002 is about 85.9975661832.

Adding to 636002 its reverse (200636), we get a palindrome (836638).

The spelling of 636002 in words is "six hundred thirty-six thousand, two".