6840448 has 16 divisors (see below), whose sum is σ = 13627710. Its totient is φ = 3420160.

The previous prime is 6840439. The next prime is 6840461. The reversal of 6840448 is 8440486.

It can be written as a sum of positive squares in only one way, i.e., 5419584 + 1420864 = 2328^2 + 1192^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26593 + ... + 26848.

Almost surely, 2^6840448 is an apocalyptic number.

It is an amenable number.

6840448 is a deficient number, since it is larger than the sum of its proper divisors (6787262).

6840448 is an equidigital number, since it uses as much as digits as its factorization.

6840448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53455 (or 53443 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 6840448 is about 2615.4250132627. The cubic root of 6840448 is about 189.8285433845.

Multiplying 6840448 by its sum of digits (34), we get a palindrome (232575232).

The spelling of 6840448 in words is "six million, eight hundred forty thousand, four hundred forty-eight".