6520223656 has 32 divisors (see below), whose sum is σ = 13126898880. Its totient is φ = 3025120000.

The previous prime is 6520223653. The next prime is 6520223663. The reversal of 6520223656 is 6563220256.

It is not an unprimeable number, because it can be changed into a prime (6520223653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327970 + ... + 347281.

It is an arithmetic number, because the mean of its divisors is an integer number (410215590).

Almost surely, 2^6520223656 is an apocalyptic number.

It is an amenable number.

6520223656 is an abundant number, since it is smaller than the sum of its proper divisors (6606675224).

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

6520223656 is a wasteful number, since it uses less digits than its factorization.

6520223656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675345 (or 675341 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 6520223656 is about 80747.9018674789. The cubic root of 6520223656 is about 1868.1890879055.

The spelling of 6520223656 in words is "six billion, five hundred twenty million, two hundred twenty-three thousand, six hundred fifty-six".