6848721 has 36 divisors (see below), whose sum is σ = 11480560. Its totient is φ = 3920400.

The previous prime is 6848717. The next prime is 6848741. The reversal of 6848721 is 1278486.

6848721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6848721 - 2² = 6848717 is a prime.

6848721 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6848701) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20526 + ... + 20856.

Almost surely, 2^6848721 is an apocalyptic number.

It is an amenable number.

6848721 is a deficient number, since it is larger than the sum of its proper divisors (4631839).

6848721 is a wasteful number, since it uses less digits than its factorization.

6848721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 364 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 6848721 is about 2617.0061138637. The cubic root of 6848721 is about 189.9050402675.

It can be divided in two parts, 6848 and 721, that added together give a square (7569 = 87²).

The spelling of 6848721 in words is "six million, eight hundred forty-eight thousand, seven hundred twenty-one".