263720063 has 2 divisors, whose sum is σ = 263720064. Its totient is φ = 263720062.

The previous prime is 263720021. The next prime is 263720071. The reversal of 263720063 is 360027362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263720063 - 2⁶ = 263719999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263720363) 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, 131860031 + 131860032.

It is an arithmetic number, because the mean of its divisors is an integer number (131860032).

Almost surely, 2^263720063 is an apocalyptic number.

263720063 is a deficient number, since it is larger than the sum of its proper divisors (1).

263720063 is an equidigital number, since it uses as much as digits as its factorization.

263720063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 263720063 is about 16239.4600587581. The cubic root of 263720063 is about 641.2800414801.

The spelling of 263720063 in words is "two hundred sixty-three million, seven hundred twenty thousand, sixty-three".