636020629 has 2 divisors, whose sum is σ = 636020630. Its totient is φ = 636020628.

The previous prime is 636020597. The next prime is 636020647. The reversal of 636020629 is 926020636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 579364900 + 56655729 = 24070^2 + 7527^2 .

It is a cyclic number.

It is not a de Polignac number, because 636020629 - 2⁵ = 636020597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 636020594 and 636020603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (636020729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318010314 + 318010315.

It is an arithmetic number, because the mean of its divisors is an integer number (318010315).

Almost surely, 2^636020629 is an apocalyptic number.

It is an amenable number.

636020629 is a deficient number, since it is larger than the sum of its proper divisors (1).

636020629 is an equidigital number, since it uses as much as digits as its factorization.

636020629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 636020629 is about 25219.4494190496. The cubic root of 636020629 is about 859.9840582046.

The spelling of 636020629 in words is "six hundred thirty-six million, twenty thousand, six hundred twenty-nine".