6898121 has 4 divisors (see below), whose sum is σ = 7261200. Its totient is φ = 6535044.

The previous prime is 6898117. The next prime is 6898139. The reversal of 6898121 is 1218986.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6898121 - 2² = 6898117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6898181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181511 + ... + 181548.

It is an arithmetic number, because the mean of its divisors is an integer number (1815300).

Almost surely, 2^6898121 is an apocalyptic number.

It is an amenable number.

6898121 is a deficient number, since it is larger than the sum of its proper divisors (363079).

6898121 is a wasteful number, since it uses less digits than its factorization.

6898121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363078.

The product of its digits is 6912, while the sum is 35.

The square root of 6898121 is about 2626.4274214225. The cubic root of 6898121 is about 190.3605434711.

It can be divided in two parts, 68 and 98121, that added together give a palindrome (98189).

The spelling of 6898121 in words is "six million, eight hundred ninety-eight thousand, one hundred twenty-one".