2066635489 has 2 divisors, whose sum is σ = 2066635490. Its totient is φ = 2066635488.

The previous prime is 2066635477. The next prime is 2066635499. The reversal of 2066635489 is 9845366602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1864512400 + 202123089 = 43180^2 + 14217^2 .

It is a cyclic number.

It is not a de Polignac number, because 2066635489 - 2¹⁵ = 2066602721 is a prime.

It is not a weakly prime, because it can be changed into another prime (2066635499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033317744 + 1033317745.

It is an arithmetic number, because the mean of its divisors is an integer number (1033317745).

Almost surely, 2^2066635489 is an apocalyptic number.

It is an amenable number.

2066635489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066635489 is an equidigital number, since it uses as much as digits as its factorization.

2066635489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The square root of 2066635489 is about 45460.2627467110. The cubic root of 2066635489 is about 1273.7610394850.

The spelling of 2066635489 in words is "two billion, sixty-six million, six hundred thirty-five thousand, four hundred eighty-nine".