636013 has 8 divisors (see below), whose sum is σ = 744128. Its totient is φ = 532224.

The previous prime is 635989. The next prime is 636017. The reversal of 636013 is 310636.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 636013 - 2⁵ = 635981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636017) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 756 + ... + 1357.

It is an arithmetic number, because the mean of its divisors is an integer number (93016).

2⁶³⁶⁰¹³ is an apocalyptic number.

It is an amenable number.

636013 is a deficient number, since it is larger than the sum of its proper divisors (108115).

636013 is a wasteful number, since it uses less digits than its factorization.

636013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 636013 is about 797.5042319637. The cubic root of 636013 is about 85.9980619718.

Adding to 636013 its reverse (310636), we get a palindrome (946649).

The spelling of 636013 in words is "six hundred thirty-six thousand, thirteen".