6544216 has 32 divisors (see below), whose sum is σ = 14142240. Its totient is φ = 2780928.

The previous prime is 6544207. The next prime is 6544217. The reversal of 6544216 is 6124456.

6544216 = T₄₉₈ + T₄₉₉ + ... + T₅₄₅.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6544217) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7246 + ... + 8098.

It is an arithmetic number, because the mean of its divisors is an integer number (441945).

Almost surely, 2^6544216 is an apocalyptic number.

It is an amenable number.

6544216 is an abundant number, since it is smaller than the sum of its proper divisors (7598024).

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

6544216 is a wasteful number, since it uses less digits than its factorization.

6544216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003 (or 999 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 6544216 is about 2558.1665309358. The cubic root of 6544216 is about 187.0477729755.

The spelling of 6544216 in words is "six million, five hundred forty-four thousand, two hundred sixteen".