6405344 has 48 divisors (see below), whose sum is σ = 14224896. Its totient is φ = 2812800.

The previous prime is 6405331. The next prime is 6405353. The reversal of 6405344 is 4435046.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10619 + ... + 11205.

It is an arithmetic number, because the mean of its divisors is an integer number (296352).

Almost surely, 2^6405344 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 6405344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7112448).

6405344 is an abundant number, since it is smaller than the sum of its proper divisors (7819552).

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

6405344 is a wasteful number, since it uses less digits than its factorization.

6405344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 631 counting only the distinct ones).

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

The square root of 6405344 is about 2530.8781084833. The cubic root of 6405344 is about 185.7152153236.

The spelling of 6405344 in words is "six million, four hundred five thousand, three hundred forty-four".