1066789 has 2 divisors, whose sum is σ = 1066790. Its totient is φ = 1066788.

The previous prime is 1066777. The next prime is 1066811. The reversal of 1066789 is 9876601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 736164 + 330625 = 858^2 + 575^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066789 - 2⁵ = 1066757 is a prime.

It is a super-2 number, since 2×1066789² = 2276077541042, which contains 22 as substring.

1066789 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533394 + 533395.

It is an arithmetic number, because the mean of its divisors is an integer number (533395).

2^1066789 is an apocalyptic number.

It is an amenable number.

1066789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066789 is an equidigital number, since it uses as much as digits as its factorization.

1066789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1066789 is about 1032.8547816610. The cubic root of 1066789 is about 102.1784968860.

The spelling of 1066789 in words is "one million, sixty-six thousand, seven hundred eighty-nine".