2061684684 has 24 divisors (see below), whose sum is σ = 5345108720. Its totient is φ = 687228192.

The previous prime is 2061684679. The next prime is 2061684697. The reversal of 2061684684 is 4864861602.

2061684684 is a `hidden beast` number, since 20 + 6 + 168 + 468 + 4 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9544729 + ... + 9544944.

Almost surely, 2^2061684684 is an apocalyptic number.

It is an amenable number.

2061684684 is an abundant number, since it is smaller than the sum of its proper divisors (3283424036).

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

2061684684 is a wasteful number, since it uses less digits than its factorization.

2061684684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19089686 (or 19089678 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 2061684684 is about 45405.7780904589. The cubic root of 2061684684 is about 1272.7430910842.

The spelling of 2061684684 in words is "two billion, sixty-one million, six hundred eighty-four thousand, six hundred eighty-four".