636255743 has 2 divisors, whose sum is σ = 636255744. Its totient is φ = 636255742.

The previous prime is 636255733. The next prime is 636255797. The reversal of 636255743 is 347552636.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 636255743 - 2⁴ = 636255727 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 636255743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (636255703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318127871 + 318127872.

It is an arithmetic number, because the mean of its divisors is an integer number (318127872).

Almost surely, 2^636255743 is an apocalyptic number.

636255743 is a deficient number, since it is larger than the sum of its proper divisors (1).

636255743 is an equidigital number, since it uses as much as digits as its factorization.

636255743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 41.

The square root of 636255743 is about 25224.1103510114. The cubic root of 636255743 is about 860.0900135636.

The spelling of 636255743 in words is "six hundred thirty-six million, two hundred fifty-five thousand, seven hundred forty-three".