6869591689 has 3 divisors (see below), whose sum is σ = 6869674573. Its totient is φ = 6869508806.

The previous prime is 6869591681. The next prime is 6869591713. The reversal of 6869591689 is 9861959686.

The square root of 6869591689 is 82883.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 6869591689 - 2³ = 6869591681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6869591681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 41442 + ... + 124324.

Almost surely, 2^6869591689 is an apocalyptic number.

6869591689 is the 82883-rd square number.

6869591689 is the 41442-nd centered octagonal number.

It is an amenable number.

6869591689 is a deficient number, since it is larger than the sum of its proper divisors (82884).

6869591689 is an frugal number, since it uses more digits than its factorization.

6869591689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165766 (or 82883 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 67.

The cubic root of 6869591689 is about 1900.9774923145.

The spelling of 6869591689 in words is "six billion, eight hundred sixty-nine million, five hundred ninety-one thousand, six hundred eighty-nine".