636320743 has 2 divisors, whose sum is σ = 636320744. Its totient is φ = 636320742.

The previous prime is 636320701. The next prime is 636320753. The reversal of 636320743 is 347023636.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-636320743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 636320699 and 636320708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (636320753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318160371 + 318160372.

It is an arithmetic number, because the mean of its divisors is an integer number (318160372).

Almost surely, 2^636320743 is an apocalyptic number.

636320743 is a deficient number, since it is larger than the sum of its proper divisors (1).

636320743 is an equidigital number, since it uses as much as digits as its factorization.

636320743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 34.

The square root of 636320743 is about 25225.3987679085. The cubic root of 636320743 is about 860.1193015493.

The spelling of 636320743 in words is "six hundred thirty-six million, three hundred twenty thousand, seven hundred forty-three".