2006606660 has 12 divisors (see below), whose sum is σ = 4213874028. Its totient is φ = 802642656.

The previous prime is 2006606633. The next prime is 2006606677. The reversal of 2006606660 is 666066002.

It can be written as a sum of positive squares in 2 ways, for example, as 807923776 + 1198682884 = 28424^2 + 34622^2 .

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, 50165147 + ... + 50165186.

It is an arithmetic number, because the mean of its divisors is an integer number (351156169).

Almost surely, 2^2006606660 is an apocalyptic number.

2006606660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2006606660 is an abundant number, since it is smaller than the sum of its proper divisors (2207267368).

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

2006606660 is a wasteful number, since it uses less digits than its factorization.

2006606660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100330342 (or 100330340 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 2006606660 is about 44795.1633549873. The cubic root of 2006606660 is about 1261.3068367766.

The spelling of 2006606660 in words is "two billion, six million, six hundred six thousand, six hundred sixty".