663605743 has 2 divisors, whose sum is σ = 663605744. Its totient is φ = 663605742.

The previous prime is 663605717. The next prime is 663605749. The reversal of 663605743 is 347506366.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-663605743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 663605696 and 663605705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663605749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331802871 + 331802872.

It is an arithmetic number, because the mean of its divisors is an integer number (331802872).

Almost surely, 2^663605743 is an apocalyptic number.

663605743 is a deficient number, since it is larger than the sum of its proper divisors (1).

663605743 is an equidigital number, since it uses as much as digits as its factorization.

663605743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 40.

The square root of 663605743 is about 25760.5462480903. The cubic root of 663605743 is about 872.2414317420.

The spelling of 663605743 in words is "six hundred sixty-three million, six hundred five thousand, seven hundred forty-three".