2066881868 has 12 divisors (see below), whose sum is σ = 3617362392. Its totient is φ = 1033349760.

The previous prime is 2066881841. The next prime is 2066881889. The reversal of 2066881868 is 8681886602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72188 + ... + 96668.

It is an arithmetic number, because the mean of its divisors is an integer number (301446866).

Almost surely, 2^2066881868 is an apocalyptic number.

It is an amenable number.

2066881868 is a deficient number, since it is larger than the sum of its proper divisors (1550480524).

2066881868 is a wasteful number, since it uses less digits than its factorization.

2066881868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45592 (or 45590 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 53.

The square root of 2066881868 is about 45462.9724941078. The cubic root of 2066881868 is about 1273.8116556519.

The spelling of 2066881868 in words is "two billion, sixty-six million, eight hundred eighty-one thousand, eight hundred sixty-eight".