2680808640 has 56 divisors (see below), whose sum is σ = 8511570480. Its totient is φ = 714882048.

The previous prime is 2680808621. The next prime is 2680808651. The reversal of 2680808640 is 468080862.

2680808640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2680808592 and 2680808601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1395295 + ... + 1397214.

It is an arithmetic number, because the mean of its divisors is an integer number (151992330).

Almost surely, 2^2680808640 is an apocalyptic number.

2680808640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2680808640 is an abundant number, since it is smaller than the sum of its proper divisors (5830761840).

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

2680808640 is a wasteful number, since it uses less digits than its factorization.

2680808640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792529 (or 2792519 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 2680808640 is about 51776.5259553014. The cubic root of 2680808640 is about 1389.1696021781.

The spelling of 2680808640 in words is "two billion, six hundred eighty million, eight hundred eight thousand, six hundred forty".