636112241 has 16 divisors (see below), whose sum is σ = 662957568. Its totient is φ = 609960000.

The previous prime is 636112237. The next prime is 636112277. The reversal of 636112241 is 142211636.

It is a cyclic number.

It is not a de Polignac number, because 636112241 - 2² = 636112237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 636112241.

It is not an unprimeable number, because it can be changed into a prime (636112231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488291 + ... + 489591.

It is an arithmetic number, because the mean of its divisors is an integer number (41434848).

Almost surely, 2^636112241 is an apocalyptic number.

It is an amenable number.

636112241 is a deficient number, since it is larger than the sum of its proper divisors (26845327).

636112241 is a wasteful number, since it uses less digits than its factorization.

636112241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552.

The product of its digits is 1728, while the sum is 26.

The square root of 636112241 is about 25221.2656502405. The cubic root of 636112241 is about 860.0253467381.

Adding to 636112241 its reverse (142211636), we get a palindrome (778323877).

The spelling of 636112241 in words is "six hundred thirty-six million, one hundred twelve thousand, two hundred forty-one".