2065839678 has 24 divisors (see below), whose sum is σ = 5115412848. Its totient is φ = 590239872.

The previous prime is 2065839673. The next prime is 2065839701. The reversal of 2065839678 is 8769385602.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065839673) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 8197651 + ... + 8197902.

It is an arithmetic number, because the mean of its divisors is an integer number (213142202).

Almost surely, 2^2065839678 is an apocalyptic number.

2065839678 is an abundant number, since it is smaller than the sum of its proper divisors (3049573170).

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

2065839678 is a wasteful number, since it uses less digits than its factorization.

2065839678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16395568 (or 16395565 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The square root of 2065839678 is about 45451.5090838577. The cubic root of 2065839678 is about 1273.5975203749.

The spelling of 2065839678 in words is "two billion, sixty-five million, eight hundred thirty-nine thousand, six hundred seventy-eight".