1065220609 has 2 divisors, whose sum is σ = 1065220610. Its totient is φ = 1065220608.

The previous prime is 1065220573. The next prime is 1065220627. The reversal of 1065220609 is 9060225601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 610337025 + 454883584 = 24705^2 + 21328^2 .

It is a cyclic number.

It is not a de Polignac number, because 1065220609 - 2⁹ = 1065220097 is a prime.

It is a super-2 number, since 2×1065220609² = 2269389891676661762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1065220649) 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, 532610304 + 532610305.

It is an arithmetic number, because the mean of its divisors is an integer number (532610305).

Almost surely, 2^1065220609 is an apocalyptic number.

It is an amenable number.

1065220609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065220609 is an equidigital number, since it uses as much as digits as its factorization.

1065220609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1065220609 is about 32637.7175825761. The cubic root of 1065220609 is about 1021.2839812071.

The spelling of 1065220609 in words is "one billion, sixty-five million, two hundred twenty thousand, six hundred nine".