6520686352 has 20 divisors (see below), whose sum is σ = 12656943376. Its totient is φ = 3254378400.

The previous prime is 6520686343. The next prime is 6520686401. The reversal of 6520686352 is 2536860256.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6520686299 and 6520686308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363774 + ... + 381277.

Almost surely, 2^6520686352 is an apocalyptic number.

It is an amenable number.

6520686352 is a deficient number, since it is larger than the sum of its proper divisors (6136257024).

6520686352 is a wasteful number, since it uses less digits than its factorization.

6520686352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745606 (or 745600 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The square root of 6520686352 is about 80750.7668818074. The cubic root of 6520686352 is about 1868.2332777584.

The spelling of 6520686352 in words is "six billion, five hundred twenty million, six hundred eighty-six thousand, three hundred fifty-two".