2066789 has 2 divisors, whose sum is σ = 2066790. Its totient is φ = 2066788.

The previous prime is 2066777. The next prime is 2066797. The reversal of 2066789 is 9876602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1932100 + 134689 = 1390^2 + 367^2 .

It is a cyclic number.

It is not a de Polignac number, because 2066789 - 2¹² = 2062693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2066759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033394 + 1033395.

It is an arithmetic number, because the mean of its divisors is an integer number (1033395).

2^2066789 is an apocalyptic number.

It is an amenable number.

2066789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066789 is an equidigital number, since it uses as much as digits as its factorization.

2066789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 2066789 is about 1437.6331242706. The cubic root of 2066789 is about 127.3792577298.

The spelling of 2066789 in words is "two million, sixty-six thousand, seven hundred eighty-nine".