6898669 has 4 divisors (see below), whose sum is σ = 6916444. Its totient is φ = 6880896.

The previous prime is 6898667. The next prime is 6898739. The reversal of 6898669 is 9668986.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2220100 + 4678569 = 1490^2 + 2163^2 .

It is a cyclic number.

It is not a de Polignac number, because 6898669 - 2¹ = 6898667 is a prime.

It is a super-2 number, since 2×6898669² = 95183267943122, which contains 22 as substring.

It is a Duffinian number.

6898669 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6898663) 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 3 ways as a sum of consecutive naturals, for example, 8292 + ... + 9085.

It is an arithmetic number, because the mean of its divisors is an integer number (1729111).

Almost surely, 2^6898669 is an apocalyptic number.

It is an amenable number.

6898669 is a deficient number, since it is larger than the sum of its proper divisors (17775).

6898669 is a wasteful number, since it uses less digits than its factorization.

6898669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17774.

The product of its digits is 1119744, while the sum is 52.

The square root of 6898669 is about 2626.5317435736. The cubic root of 6898669 is about 190.3655842069.

The spelling of 6898669 in words is "six million, eight hundred ninety-eight thousand, six hundred sixty-nine".