6560990656 has 28 divisors (see below), whose sum is σ = 14203055160. Its totient is φ = 2982268160.

The previous prime is 6560990621. The next prime is 6560990671.

It is a happy number.

6560990656 is nontrivially palindromic in base 10.

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, 4659091 + ... + 4660498.

It is an arithmetic number, because the mean of its divisors is an integer number (507251970).

Almost surely, 2^6560990656 is an apocalyptic number.

It is an amenable number.

6560990656 is an abundant number, since it is smaller than the sum of its proper divisors (7642064504).

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

6560990656 is a wasteful number, since it uses less digits than its factorization.

6560990656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9319612 (or 9319602 counting only the distinct ones).

The product of its (nonzero) digits is 2624400, while the sum is 52.

The square root of 6560990656 is about 80999.9423209671. The cubic root of 6560990656 is about 1872.0745520264.

The spelling of 6560990656 in words is "six billion, five hundred sixty million, nine hundred ninety thousand, six hundred fifty-six".