6898221 has 24 divisors (see below), whose sum is σ = 11063520. Its totient is φ = 4106400.

The previous prime is 6898187. The next prime is 6898231. The reversal of 6898221 is 1228986.

6898221 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 6898221 - 2¹¹ = 6896173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6898231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5251 + ... + 6431.

It is an arithmetic number, because the mean of its divisors is an integer number (460980).

Almost surely, 2^6898221 is an apocalyptic number.

It is an amenable number.

6898221 is a deficient number, since it is larger than the sum of its proper divisors (4165299).

6898221 is a wasteful number, since it uses less digits than its factorization.

6898221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257 (or 1254 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 6898221 is about 2626.4464586205. The cubic root of 6898221 is about 190.3614633333.

It can be divided in two parts, 68 and 98221, that added together give a palindrome (98289).

The spelling of 6898221 in words is "six million, eight hundred ninety-eight thousand, two hundred twenty-one".