268556473 has 2 divisors, whose sum is σ = 268556474. Its totient is φ = 268556472.

The previous prime is 268556461. The next prime is 268556513. The reversal of 268556473 is 374655862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 268042384 + 514089 = 16372^2 + 717^2 .

It is a cyclic number.

It is not a de Polignac number, because 268556473 - 2²¹ = 266459321 is a prime.

It is not a weakly prime, because it can be changed into another prime (268556173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134278236 + 134278237.

It is an arithmetic number, because the mean of its divisors is an integer number (134278237).

Almost surely, 2^268556473 is an apocalyptic number.

It is an amenable number.

268556473 is a deficient number, since it is larger than the sum of its proper divisors (1).

268556473 is an equidigital number, since it uses as much as digits as its factorization.

268556473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 46.

The square root of 268556473 is about 16387.6927296066. The cubic root of 268556473 is about 645.1765019839.

The spelling of 268556473 in words is "two hundred sixty-eight million, five hundred fifty-six thousand, four hundred seventy-three".