636041 has 4 divisors (see below), whose sum is σ = 726912. Its totient is φ = 545172.

The previous prime is 636023. The next prime is 636043. The reversal of 636041 is 140636.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 636041 - 2⁶ = 635977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (636043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45425 + ... + 45438.

It is an arithmetic number, because the mean of its divisors is an integer number (181728).

2⁶³⁶⁰⁴¹ is an apocalyptic number.

It is an amenable number.

636041 is a deficient number, since it is larger than the sum of its proper divisors (90871).

636041 is an equidigital number, since it uses as much as digits as its factorization.

636041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90870.

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

The square root of 636041 is about 797.5217865363. The cubic root of 636041 is about 85.9993239536. Note that the first 3 decimals are identical.

Adding to 636041 its reverse (140636), we get a palindrome (776677).

The spelling of 636041 in words is "six hundred thirty-six thousand, forty-one".