6520804236 has 60 divisors (see below), whose sum is σ = 17064048232. Its totient is φ = 2171385792.

The previous prime is 6520804217. The next prime is 6520804249. The reversal of 6520804236 is 6324080256.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 6520804236.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 324951 + ... + 344433.

Almost surely, 2^6520804236 is an apocalyptic number.

It is an amenable number.

6520804236 is an abundant number, since it is smaller than the sum of its proper divisors (10543243996).

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

6520804236 is a wasteful number, since it uses less digits than its factorization.

6520804236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20532 (or 20521 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 6520804236 is about 80751.4968034649. The cubic root of 6520804236 is about 1868.2445359538.

The spelling of 6520804236 in words is "six billion, five hundred twenty million, eight hundred four thousand, two hundred thirty-six".