6898985 has 4 divisors (see below), whose sum is σ = 8278788. Its totient is φ = 5519184.

The previous prime is 6898981. The next prime is 6898993. The reversal of 6898985 is 5898986.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5898986 = 2 ⋅2949493.

It can be written as a sum of positive squares in 2 ways, for example, as 5331481 + 1567504 = 2309^2 + 1252^2 .

It is a cyclic number.

It is not a de Polignac number, because 6898985 - 2² = 6898981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6898981) 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, 689894 + ... + 689903.

It is an arithmetic number, because the mean of its divisors is an integer number (2069697).

Almost surely, 2^6898985 is an apocalyptic number.

It is an amenable number.

6898985 is a deficient number, since it is larger than the sum of its proper divisors (1379803).

6898985 is a wasteful number, since it uses less digits than its factorization.

6898985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379802.

The product of its digits is 1244160, while the sum is 53.

The square root of 6898985 is about 2626.5918982590. The cubic root of 6898985 is about 190.3684907872.

Subtracting from 6898985 its reverse (5898986), we obtain a palindrome (999999).

The spelling of 6898985 in words is "six million, eight hundred ninety-eight thousand, nine hundred eighty-five".