6997689 has 24 divisors (see below), whose sum is σ = 10513152. Its totient is φ = 4482240.

The previous prime is 6997687. The next prime is 6997733. The reversal of 6997689 is 9867996.

It is not a de Polignac number, because 6997689 - 2¹ = 6997687 is a prime.

6997689 is a modest number, since divided by 7689 gives 699 as remainder.

It is not an unprimeable number, because it can be changed into a prime (6997687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29917 + ... + 30149.

It is an arithmetic number, because the mean of its divisors is an integer number (438048).

Almost surely, 2^6997689 is an apocalyptic number.

It is an amenable number.

6997689 is a deficient number, since it is larger than the sum of its proper divisors (3515463).

6997689 is a wasteful number, since it uses less digits than its factorization.

6997689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 354 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 6997689 is about 2645.3145370636. The cubic root of 6997689 is about 191.2720646080.

The spelling of 6997689 in words is "six million, nine hundred ninety-seven thousand, six hundred eighty-nine".