2081678684 has 24 divisors (see below), whose sum is σ = 3845004240. Its totient is φ = 983401344.

The previous prime is 2081678663. The next prime is 2081678699. The reversal of 2081678684 is 4868761802.

It is a super-2 number, since 2×2081678684² = 8666772286839943712, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 8369 + ... + 65064.

It is an arithmetic number, because the mean of its divisors is an integer number (160208510).

Almost surely, 2^2081678684 is an apocalyptic number.

It is an amenable number.

2081678684 is a deficient number, since it is larger than the sum of its proper divisors (1763325556).

2081678684 is a wasteful number, since it uses less digits than its factorization.

2081678684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73829 (or 73827 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 50.

The square root of 2081678684 is about 45625.4170830251. The cubic root of 2081678684 is about 1276.8441715285.

The spelling of 2081678684 in words is "two billion, eighty-one million, six hundred seventy-eight thousand, six hundred eighty-four".