6815606240 has 24 divisors (see below), whose sum is σ = 16101870120. Its totient is φ = 2726242432.

The previous prime is 6815606209. The next prime is 6815606267. The reversal of 6815606240 is 426065186.

It is a junction number, because it is equal to n+sod(n) for n = 6815606194 and 6815606203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21298610 + ... + 21298929.

It is an arithmetic number, because the mean of its divisors is an integer number (670911255).

Almost surely, 2^6815606240 is an apocalyptic number.

It is an amenable number.

6815606240 is an abundant number, since it is smaller than the sum of its proper divisors (9286263880).

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

6815606240 is a wasteful number, since it uses less digits than its factorization.

6815606240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42597554 (or 42597546 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 6815606240 is about 82556.6850109669. The cubic root of 6815606240 is about 1895.9847097107.

The spelling of 6815606240 in words is "six billion, eight hundred fifteen million, six hundred six thousand, two hundred forty".