6884641 has 2 divisors, whose sum is σ = 6884642. Its totient is φ = 6884640.

The previous prime is 6884639. The next prime is 6884653. The reversal of 6884641 is 1464886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6630625 + 254016 = 2575^2 + 504^2 .

It is a cyclic number.

It is not a de Polignac number, because 6884641 - 2¹ = 6884639 is a prime.

Together with 6884639, it forms a pair of twin primes.

6884641 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6884641.

It is not a weakly prime, because it can be changed into another prime (6884611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3442320 + 3442321.

It is an arithmetic number, because the mean of its divisors is an integer number (3442321).

Almost surely, 2^6884641 is an apocalyptic number.

It is an amenable number.

6884641 is a deficient number, since it is larger than the sum of its proper divisors (1).

6884641 is an equidigital number, since it uses as much as digits as its factorization.

6884641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 37.

The square root of 6884641 is about 2623.8599429085. The cubic root of 6884641 is about 190.2364645886.

It can be divided in two parts, 688 and 4641, that added together give a square (5329 = 73²).

The spelling of 6884641 in words is "six million, eight hundred eighty-four thousand, six hundred forty-one".