2066635449 has 24 divisors (see below), whose sum is σ = 3051509760. Its totient is φ = 1347180288.

The previous prime is 2066635423. The next prime is 2066635477. The reversal of 2066635449 is 9445366602.

It is not a de Polignac number, because 2066635449 - 2⁷ = 2066635321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2066635489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 716392 + ... + 719270.

It is an arithmetic number, because the mean of its divisors is an integer number (127146240).

Almost surely, 2^2066635449 is an apocalyptic number.

It is an amenable number.

2066635449 is a deficient number, since it is larger than the sum of its proper divisors (984874311).

2066635449 is a wasteful number, since it uses less digits than its factorization.

2066635449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4629 (or 4626 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The square root of 2066635449 is about 45460.2623067663. The cubic root of 2066635449 is about 1273.7610312670.

The spelling of 2066635449 in words is "two billion, sixty-six million, six hundred thirty-five thousand, four hundred forty-nine".