636313 has 2 divisors, whose sum is σ = 636314. Its totient is φ = 636312.

The previous prime is 636301. The next prime is 636319. The reversal of 636313 is 313636.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 535824 + 100489 = 732^2 + 317^2 .

It is a cyclic number.

It is not a de Polignac number, because 636313 - 2⁹ = 635801 is a prime.

It is not a weakly prime, because it can be changed into another prime (636319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318156 + 318157.

It is an arithmetic number, because the mean of its divisors is an integer number (318157).

2⁶³⁶³¹³ is an apocalyptic number.

It is an amenable number.

636313 is a deficient number, since it is larger than the sum of its proper divisors (1).

636313 is an equidigital number, since it uses as much as digits as its factorization.

636313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 22.

The square root of 636313 is about 797.6922965655. The cubic root of 636313 is about 86.0115812779.

Adding to 636313 its reverse (313636), we get a palindrome (949949).

It can be divided in two parts, 636 and 313, that added together give a palindrome (949).

The spelling of 636313 in words is "six hundred thirty-six thousand, three hundred thirteen".