2006866820 has 48 divisors (see below), whose sum is σ = 4829518848. Its totient is φ = 686206080.

The previous prime is 2006866819. The next prime is 2006866837. The reversal of 2006866820 is 286686002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33005 + ... + 71435.

It is an arithmetic number, because the mean of its divisors is an integer number (100614976).

Almost surely, 2^2006866820 is an apocalyptic number.

2006866820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2006866820 is an abundant number, since it is smaller than the sum of its proper divisors (2822652028).

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

2006866820 is a wasteful number, since it uses less digits than its factorization.

2006866820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38820 (or 38818 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 2006866820 is about 44798.0671458044. The cubic root of 2006866820 is about 1261.3613446203.

The spelling of 2006866820 in words is "two billion, six million, eight hundred sixty-six thousand, eight hundred twenty".