6853689 has 6 divisors (see below), whose sum is σ = 9899786. Its totient is φ = 4569120.

The previous prime is 6853667. The next prime is 6853709. The reversal of 6853689 is 9863586.

It can be written as a sum of positive squares in only one way, i.e., 6335289 + 518400 = 2517^2 + 720^2 .

It is not a de Polignac number, because 6853689 - 2¹² = 6849593 is a prime.

It is a Duffinian number.

6853689 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6853619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 380752 + ... + 380769.

Almost surely, 2^6853689 is an apocalyptic number.

It is an amenable number.

6853689 is a deficient number, since it is larger than the sum of its proper divisors (3046097).

6853689 is a wasteful number, since it uses less digits than its factorization.

6853689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761527 (or 761524 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 6853689 is about 2617.9551180263. The cubic root of 6853689 is about 189.9509476327.

The spelling of 6853689 in words is "six million, eight hundred fifty-three thousand, six hundred eighty-nine".