1745066689 has 2 divisors, whose sum is σ = 1745066690. Its totient is φ = 1745066688.

The previous prime is 1745066671. The next prime is 1745066731. The reversal of 1745066689 is 9866605471.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 959946289 + 785120400 = 30983^2 + 28020^2 .

It is an emirp because it is prime and its reverse (9866605471) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1745066689 - 2⁹ = 1745066177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1745066489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 872533344 + 872533345.

It is an arithmetic number, because the mean of its divisors is an integer number (872533345).

Almost surely, 2^1745066689 is an apocalyptic number.

It is an amenable number.

1745066689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1745066689 is an equidigital number, since it uses as much as digits as its factorization.

1745066689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 1745066689 is about 41773.9953679319. The cubic root of 1745066689 is about 1203.9376871703.

The spelling of 1745066689 in words is "one billion, seven hundred forty-five million, sixty-six thousand, six hundred eighty-nine".