743128663 has 2 divisors, whose sum is σ = 743128664. Its totient is φ = 743128662.

The previous prime is 743128601. The next prime is 743128693. The reversal of 743128663 is 366821347.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 743128663 - 2⁹ = 743128151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (743128693) 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, 371564331 + 371564332.

It is an arithmetic number, because the mean of its divisors is an integer number (371564332).

Almost surely, 2^743128663 is an apocalyptic number.

743128663 is a deficient number, since it is larger than the sum of its proper divisors (1).

743128663 is an equidigital number, since it uses as much as digits as its factorization.

743128663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 40.

The square root of 743128663 is about 27260.3863325522. The cubic root of 743128663 is about 905.7771020323. Note that the first 3 decimals are identical.

The spelling of 743128663 in words is "seven hundred forty-three million, one hundred twenty-eight thousand, six hundred sixty-three".