1068205609 has 2 divisors, whose sum is σ = 1068205610. Its totient is φ = 1068205608.

The previous prime is 1068205597. The next prime is 1068205637. The reversal of 1068205609 is 9065028601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 682672384 + 385533225 = 26128^2 + 19635^2 .

It is a cyclic number.

It is not a de Polignac number, because 1068205609 - 2²¹ = 1066108457 is a prime.

It is a super-2 number, since 2×1068205609² = 2282126446198121762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1068205009) 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, 534102804 + 534102805.

It is an arithmetic number, because the mean of its divisors is an integer number (534102805).

Almost surely, 2^1068205609 is an apocalyptic number.

It is an amenable number.

1068205609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1068205609 is an equidigital number, since it uses as much as digits as its factorization.

1068205609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1068205609 is about 32683.4148919601. The cubic root of 1068205609 is about 1022.2370512451.

The spelling of 1068205609 in words is "one billion, sixty-eight million, two hundred five thousand, six hundred nine".