6998689 has 4 divisors (see below), whose sum is σ = 7087360. Its totient is φ = 6910020.

The previous prime is 6998687. The next prime is 6998711. The reversal of 6998689 is 9868996.

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 6998689 - 2¹ = 6998687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6998681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44217 + ... + 44374.

It is an arithmetic number, because the mean of its divisors is an integer number (1771840).

Almost surely, 2^6998689 is an apocalyptic number.

It is an amenable number.

6998689 is a deficient number, since it is larger than the sum of its proper divisors (88671).

6998689 is an equidigital number, since it uses as much as digits as its factorization.

6998689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88670.

The product of its digits is 1679616, while the sum is 55.

The square root of 6998689 is about 2645.5035437512. The cubic root of 6998689 is about 191.2811753755.

The spelling of 6998689 in words is "six million, nine hundred ninety-eight thousand, six hundred eighty-nine".