2068688648 has 64 divisors (see below), whose sum is σ = 4301954160. Its totient is φ = 926401536.

The previous prime is 2068688623. The next prime is 2068688651. The reversal of 2068688648 is 8468868602.

It can be written as a sum of positive squares in 8 ways, for example, as 742126564 + 1326562084 = 27242^2 + 36422^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2068688593 and 2068688602.

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 15 ways as a sum of consecutive naturals, for example, 2358386 + ... + 2359262.

Almost surely, 2^2068688648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2068688648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2150977080).

2068688648 is an abundant number, since it is smaller than the sum of its proper divisors (2233265512).

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

2068688648 is a wasteful number, since it uses less digits than its factorization.

2068688648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546 (or 1542 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 56.

The square root of 2068688648 is about 45482.8390494701. The cubic root of 2068688648 is about 1274.1827181625.

The spelling of 2068688648 in words is "two billion, sixty-eight million, six hundred eighty-eight thousand, six hundred forty-eight".