2066715808 has 24 divisors (see below), whose sum is σ = 4178817972. Its totient is φ = 1005428736.

The previous prime is 2066715803. The next prime is 2066715809. The reversal of 2066715808 is 8085176602.

It can be written as a sum of positive squares in 2 ways, for example, as 1478556304 + 588159504 = 38452^2 + 24252^2 .

It is not an unprimeable number, because it can be changed into a prime (2066715803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 871585 + ... + 873952.

Almost surely, 2^2066715808 is an apocalyptic number.

It is an amenable number.

2066715808 is an abundant number, since it is smaller than the sum of its proper divisors (2112102164).

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

2066715808 is a wasteful number, since it uses less digits than its factorization.

2066715808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745584 (or 1745576 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 2066715808 is about 45461.1461360138. The cubic root of 2066715808 is about 1273.7775406835. Note that the first 3 decimals are identical.

The spelling of 2066715808 in words is "two billion, sixty-six million, seven hundred fifteen thousand, eight hundred eight".