6520216 has 16 divisors (see below), whose sum is σ = 12486240. Its totient is φ = 3190560.

The previous prime is 6520207. The next prime is 6520223. The reversal of 6520216 is 6120256.

It is an Ulam number.

It is a congruent number.

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, 8295 + ... + 9046.

It is an arithmetic number, because the mean of its divisors is an integer number (780390).

Almost surely, 2^6520216 is an apocalyptic number.

It is an amenable number.

6520216 is a deficient number, since it is larger than the sum of its proper divisors (5966024).

6520216 is a wasteful number, since it uses less digits than its factorization.

6520216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17394 (or 17390 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 6520216 is about 2553.4713626747. The cubic root of 6520216 is about 186.8188356700.

The spelling of 6520216 in words is "six million, five hundred twenty thousand, two hundred sixteen".