2066989 has 2 divisors, whose sum is σ = 2066990. Its totient is φ = 2066988.

The previous prime is 2066971. The next prime is 2066993. The reversal of 2066989 is 9896602.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1755625 + 311364 = 1325^2 + 558^2 .

It is a cyclic number.

It is not a de Polignac number, because 2066989 - 2⁵ = 2066957 is a prime.

It is a super-2 number, since 2×2066989² = 8544887052242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2066929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033494 + 1033495.

It is an arithmetic number, because the mean of its divisors is an integer number (1033495).

2^2066989 is an apocalyptic number.

It is an amenable number.

2066989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066989 is an equidigital number, since it uses as much as digits as its factorization.

2066989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 2066989 is about 1437.7026813636. The cubic root of 2066989 is about 127.3833663624.

The spelling of 2066989 in words is "two million, sixty-six thousand, nine hundred eighty-nine".