6537216 has 120 divisors (see below), whose sum is σ = 20970880. Its totient is φ = 1769472.

The previous prime is 6537211. The next prime is 6537217. The reversal of 6537216 is 6127356.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6537211) 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, 344055 + ... + 344073.

Almost surely, 2^6537216 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 6537216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10485440).

6537216 is an abundant number, since it is smaller than the sum of its proper divisors (14433664).

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

6537216 is an equidigital number, since it uses as much as digits as its factorization.

6537216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 31 counting only the distinct ones).

The product of its digits is 7560, while the sum is 30.

The square root of 6537216 is about 2556.7979974961. The cubic root of 6537216 is about 186.9810574958.

The spelling of 6537216 in words is "six million, five hundred thirty-seven thousand, two hundred sixteen".