636228049 has 8 divisors (see below), whose sum is σ = 650252160. Its totient is φ = 622224336.

The previous prime is 636228041. The next prime is 636228079. The reversal of 636228049 is 940822636.

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

It is a cyclic number.

It is not a de Polignac number, because 636228049 - 2³ = 636228041 is a prime.

It is a super-2 number, since 2×636228049² = 809572260668692802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (636228041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69927 + ... + 78499.

It is an arithmetic number, because the mean of its divisors is an integer number (81281520).

Almost surely, 2^636228049 is an apocalyptic number.

It is an amenable number.

636228049 is a deficient number, since it is larger than the sum of its proper divisors (14024111).

636228049 is a wasteful number, since it uses less digits than its factorization.

636228049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10199.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 636228049 is about 25223.5613861326. The cubic root of 636228049 is about 860.0775344734.

The spelling of 636228049 in words is "six hundred thirty-six million, two hundred twenty-eight thousand, forty-nine".