2066788889 has 8 divisors (see below), whose sum is σ = 2387307168. Its totient is φ = 1768375360.

The previous prime is 2066788861. The next prime is 2066788949. The reversal of 2066788889 is 9888876602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2066788889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2066688889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5525987 + ... + 5526360.

It is an arithmetic number, because the mean of its divisors is an integer number (298413396).

Almost surely, 2^2066788889 is an apocalyptic number.

It is an amenable number.

2066788889 is a deficient number, since it is larger than the sum of its proper divisors (320518279).

2066788889 is a wasteful number, since it uses less digits than its factorization.

2066788889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11052375.

The product of its (nonzero) digits is 18579456, while the sum is 62.

The square root of 2066788889 is about 45461.9499031883. The cubic root of 2066788889 is about 1273.7925544941.

The spelling of 2066788889 in words is "two billion, sixty-six million, seven hundred eighty-eight thousand, eight hundred eighty-nine".