6515216 has 30 divisors (see below), whose sum is σ = 13418970. Its totient is φ = 3063808.

The previous prime is 6515203. The next prime is 6515261. The reversal of 6515216 is 6125156.

It can be written as a sum of positive squares in 3 ways, for example, as 774400 + 5740816 = 880^2 + 2396^2 .

It is a plaindrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3920 + ... + 5328.

It is an arithmetic number, because the mean of its divisors is an integer number (447299).

Almost surely, 2^6515216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6515216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6709485).

6515216 is an abundant number, since it is smaller than the sum of its proper divisors (6903754).

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

6515216 is a wasteful number, since it uses less digits than its factorization.

6515216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451 (or 1428 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 6515216 is about 2552.4921155608. The cubic root of 6515216 is about 186.7710697142.

The spelling of 6515216 in words is "six million, five hundred fifteen thousand, two hundred sixteen".