263800063 has 2 divisors, whose sum is σ = 263800064. Its totient is φ = 263800062.

The previous prime is 263800057. The next prime is 263800073. The reversal of 263800063 is 360008362.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263800063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263800073) 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, 131900031 + 131900032.

It is an arithmetic number, because the mean of its divisors is an integer number (131900032).

Almost surely, 2^263800063 is an apocalyptic number.

263800063 is a deficient number, since it is larger than the sum of its proper divisors (1).

263800063 is an equidigital number, since it uses as much as digits as its factorization.

263800063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 263800063 is about 16241.9230080677. The cubic root of 263800063 is about 641.3448794451.

The spelling of 263800063 in words is "two hundred sixty-three million, eight hundred thousand, sixty-three".