2066660000 has 60 divisors (see below), whose sum is σ = 5084342802. Its totient is φ = 826656000.

The previous prime is 2066659993. The next prime is 2066660017. The reversal of 2066660000 is 666602.

It can be written as a sum of positive squares in 5 ways, for example, as 249513616 + 1817146384 = 15796^2 + 42628^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31667 + ... + 71666.

Almost surely, 2^2066660000 is an apocalyptic number.

2066660000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2066660000 is an abundant number, since it is smaller than the sum of its proper divisors (3017682802).

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

2066660000 is an equidigital number, since it uses as much as digits as its factorization.

2066660000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103363 (or 103340 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 2066660000 is about 45460.5323330029. The cubic root of 2066660000 is about 1273.7660752115.

The spelling of 2066660000 in words is "two billion, sixty-six million, six hundred sixty thousand".