6744408 has 64 divisors (see below), whose sum is σ = 18748800. Its totient is φ = 2004480.

The previous prime is 6744407. The next prime is 6744431. The reversal of 6744408 is 8044476.

It is a Cunningham number, because it is equal to 2597²-1.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6744403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15360 + ... + 15792.

It is an arithmetic number, because the mean of its divisors is an integer number (292950).

Almost surely, 2^6744408 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 6744408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9374400).

6744408 is an abundant number, since it is smaller than the sum of its proper divisors (12004392).

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

6744408 is a wasteful number, since it uses less digits than its factorization.

6744408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 6744408 is about 2596.9998074702. Note that the first 3 decimals coincide. The cubic root of 6744408 is about 188.9359543361.

The spelling of 6744408 in words is "six million, seven hundred forty-four thousand, four hundred eight".