6845689 has 4 divisors (see below), whose sum is σ = 6912256. Its totient is φ = 6779124.

The previous prime is 6845687. The next prime is 6845693. The reversal of 6845689 is 9865486.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9865486 = 2 ⋅4932743.

It is a cyclic number.

It is not a de Polignac number, because 6845689 - 2¹ = 6845687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6845687) 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, 33129 + ... + 33334.

It is an arithmetic number, because the mean of its divisors is an integer number (1728064).

Almost surely, 2^6845689 is an apocalyptic number.

It is an amenable number.

6845689 is a deficient number, since it is larger than the sum of its proper divisors (66567).

6845689 is a wasteful number, since it uses less digits than its factorization.

6845689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66566.

The product of its digits is 414720, while the sum is 46.

The square root of 6845689 is about 2616.4267618261. The cubic root of 6845689 is about 189.8770118189.

The spelling of 6845689 in words is "six million, eight hundred forty-five thousand, six hundred eighty-nine".