6560820690 has 16 divisors (see below), whose sum is σ = 15745969728. Its totient is φ = 1749552176.

The previous prime is 6560820689. The next prime is 6560820701. The reversal of 6560820690 is 960280656.

It is a super-2 number, since 2×6560820690² = 86088736252664152200, 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, 109346982 + ... + 109347041.

It is an arithmetic number, because the mean of its divisors is an integer number (984123108).

Almost surely, 2^6560820690 is an apocalyptic number.

6560820690 is an abundant number, since it is smaller than the sum of its proper divisors (9185149038).

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

6560820690 is a wasteful number, since it uses less digits than its factorization.

6560820690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218694033.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 6560820690 is about 80998.8931405856. The cubic root of 6560820690 is about 1872.0583861867.

The spelling of 6560820690 in words is "six billion, five hundred sixty million, eight hundred twenty thousand, six hundred ninety".