268073563 has 2 divisors, whose sum is σ = 268073564. Its totient is φ = 268073562.

The previous prime is 268073551. The next prime is 268073581. The reversal of 268073563 is 365370862.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268073563 is a prime.

It is not a weakly prime, because it can be changed into another prime (268073263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134036781 + 134036782.

It is an arithmetic number, because the mean of its divisors is an integer number (134036782).

Almost surely, 2^268073563 is an apocalyptic number.

268073563 is a deficient number, since it is larger than the sum of its proper divisors (1).

268073563 is an equidigital number, since it uses as much as digits as its factorization.

268073563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 268073563 is about 16372.9521772953. The cubic root of 268073563 is about 644.7895577718.

The spelling of 268073563 in words is "two hundred sixty-eight million, seventy-three thousand, five hundred sixty-three".