Search a number
-
+
636241 is a prime number
BaseRepresentation
bin10011011010101010001
31012022202111
42123111101
5130324431
621345321
75256634
oct2332521
91168674
10636241
113a5021
12268241
13193798
14127c1b
15c87b1
hex9b551

636241 has 2 divisors, whose sum is σ = 636242. Its totient is φ = 636240.

The previous prime is 636217. The next prime is 636247. The reversal of 636241 is 142636.

636241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 495616 + 140625 = 704^2 + 375^2 .

It is a cyclic number.

It is not a de Polignac number, because 636241 - 29 = 635729 is a prime.

It is a super-2 number, since 2×6362412 = 809605220162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (636247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318120 + 318121.

It is an arithmetic number, because the mean of its divisors is an integer number (318121).

2636241 is an apocalyptic number.

It is an amenable number.

636241 is a deficient number, since it is larger than the sum of its proper divisors (1).

636241 is an equidigital number, since it uses as much as digits as its factorization.

636241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 22.

The square root of 636241 is about 797.6471651050. The cubic root of 636241 is about 86.0083370320.

Adding to 636241 its reverse (142636), we get a palindrome (778877).

The spelling of 636241 in words is "six hundred thirty-six thousand, two hundred forty-one".