6898689 has 40 divisors (see below), whose sum is σ = 12312960. Its totient is φ = 3770712.

The previous prime is 6898667. The next prime is 6898739. The reversal of 6898689 is 9868986.

It is not a de Polignac number, because 6898689 - 2¹² = 6894593 is a prime.

6898689 is a strobogrammatic number because it is the same when read upside-down.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6898609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 299932 + ... + 299954.

It is an arithmetic number, because the mean of its divisors is an integer number (307824).

Almost surely, 2^6898689 is an apocalyptic number.

6898689 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

6898689 is a deficient number, since it is larger than the sum of its proper divisors (5414271).

6898689 is an frugal number, since it uses more digits than its factorization.

6898689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 33 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The square root of 6898689 is about 2626.5355508731. The cubic root of 6898689 is about 190.3657681703.

The spelling of 6898689 in words is "six million, eight hundred ninety-eight thousand, six hundred eighty-nine".