2066781376 has 28 divisors (see below), whose sum is σ = 4474113480. Its totient is φ = 939445760.

The previous prime is 2066781359. The next prime is 2066781427. The reversal of 2066781376 is 6731876602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1467181 + ... + 1468588.

Almost surely, 2^2066781376 is an apocalyptic number.

It is an amenable number.

2066781376 is an abundant number, since it is smaller than the sum of its proper divisors (2407332104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2066781376 is a wasteful number, since it uses less digits than its factorization.

2066781376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935792 (or 2935782 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 2066781376 is about 45461.8672735734. The cubic root of 2066781376 is about 1273.7910110346.

The spelling of 2066781376 in words is "two billion, sixty-six million, seven hundred eighty-one thousand, three hundred seventy-six".