6500656560 has 40 divisors (see below), whose sum is σ = 20152036080. Its totient is φ = 1733508352.

The previous prime is 6500656517. The next prime is 6500656583. The reversal of 6500656560 is 656560056.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×6500656560² = 84517071422142067200, which contains 22 as substring.

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, 13542795 + ... + 13543274.

It is an arithmetic number, because the mean of its divisors is an integer number (503800902).

Almost surely, 2^6500656560 is an apocalyptic number.

6500656560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6500656560 is an abundant number, since it is smaller than the sum of its proper divisors (13651379520).

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

6500656560 is a wasteful number, since it uses less digits than its factorization.

6500656560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27086085 (or 27086079 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 39.

The square root of 6500656560 is about 80626.6491924351. The cubic root of 6500656560 is about 1866.3184126399.

The spelling of 6500656560 in words is "six billion, five hundred million, six hundred fifty-six thousand, five hundred sixty".