268220573 has 2 divisors, whose sum is σ = 268220574. Its totient is φ = 268220572.

The previous prime is 268220569. The next prime is 268220591. The reversal of 268220573 is 375022862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 267551449 + 669124 = 16357^2 + 818^2 .

It is a cyclic number.

It is not a de Polignac number, because 268220573 - 2² = 268220569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268220873) 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, 134110286 + 134110287.

It is an arithmetic number, because the mean of its divisors is an integer number (134110287).

Almost surely, 2^268220573 is an apocalyptic number.

It is an amenable number.

268220573 is a deficient number, since it is larger than the sum of its proper divisors (1).

268220573 is an equidigital number, since it uses as much as digits as its factorization.

268220573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 268220573 is about 16377.4409783702. The cubic root of 268220573 is about 644.9074025275.

The spelling of 268220573 in words is "two hundred sixty-eight million, two hundred twenty thousand, five hundred seventy-three".