636411313 has 2 divisors, whose sum is σ = 636411314. Its totient is φ = 636411312.

The previous prime is 636411271. The next prime is 636411341. The reversal of 636411313 is 313114636.

It is an a-pointer prime, because the next prime (636411341) can be obtained adding 636411313 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 504092304 + 132319009 = 22452^2 + 11503^2 .

It is a cyclic number.

It is not a de Polignac number, because 636411313 - 2²⁹ = 99540401 is a prime.

It is not a weakly prime, because it can be changed into another prime (636412313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318205656 + 318205657.

It is an arithmetic number, because the mean of its divisors is an integer number (318205657).

Almost surely, 2^636411313 is an apocalyptic number.

It is an amenable number.

636411313 is a deficient number, since it is larger than the sum of its proper divisors (1).

636411313 is an equidigital number, since it uses as much as digits as its factorization.

636411313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 28.

The square root of 636411313 is about 25227.1939184682. The cubic root of 636411313 is about 860.1601076523.

Adding to 636411313 its reverse (313114636), we get a palindrome (949525949).

The spelling of 636411313 in words is "six hundred thirty-six million, four hundred eleven thousand, three hundred thirteen".