6544340 has 48 divisors (see below), whose sum is σ = 15168384. Its totient is φ = 2352000.

The previous prime is 6544333. The next prime is 6544357. The reversal of 6544340 is 434456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33122 + ... + 33318.

It is an arithmetic number, because the mean of its divisors is an integer number (316008).

Almost surely, 2^6544340 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 6544340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7584192).

6544340 is an abundant number, since it is smaller than the sum of its proper divisors (8624044).

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

6544340 is a wasteful number, since it uses less digits than its factorization.

6544340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 6544340 is about 2558.1907669288. The cubic root of 6544340 is about 187.0489543637.

Adding to 6544340 its reverse (434456), we get a palindrome (6978796).

It can be divided in two parts, 654 and 4340, that added together give a palindrome (4994).

The spelling of 6544340 in words is "six million, five hundred forty-four thousand, three hundred forty".