2068864440 has 64 divisors (see below), whose sum is σ = 6210293760. Its totient is φ = 551368320.

The previous prime is 2068864409. The next prime is 2068864459. The reversal of 2068864440 is 444688602.

It is a junction number, because it is equal to n+sod(n) for n = 2068864392 and 2068864401.

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 15 ways as a sum of consecutive naturals, for example, 249237 + ... + 257403.

It is an arithmetic number, because the mean of its divisors is an integer number (97035840).

Almost surely, 2^2068864440 is an apocalyptic number.

2068864440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2068864440 is an abundant number, since it is smaller than the sum of its proper divisors (4141429320).

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

2068864440 is a wasteful number, since it uses less digits than its factorization.

2068864440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10292 (or 10288 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The square root of 2068864440 is about 45484.7715175090. The cubic root of 2068864440 is about 1274.2188094296.

The spelling of 2068864440 in words is "two billion, sixty-eight million, eight hundred sixty-four thousand, four hundred forty".