6849845 has 4 divisors (see below), whose sum is σ = 8219820. Its totient is φ = 5479872.

The previous prime is 6849797. The next prime is 6849851. The reversal of 6849845 is 5489486.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5489486 = 2 ⋅2744743.

It can be written as a sum of positive squares in 2 ways, for example, as 2380849 + 4468996 = 1543^2 + 2114^2 .

It is a cyclic number.

It is not a de Polignac number, because 6849845 - 2¹⁸ = 6587701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6849796 and 6849805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684980 + ... + 684989.

It is an arithmetic number, because the mean of its divisors is an integer number (2054955).

Almost surely, 2^6849845 is an apocalyptic number.

It is an amenable number.

6849845 is a deficient number, since it is larger than the sum of its proper divisors (1369975).

6849845 is a wasteful number, since it uses less digits than its factorization.

6849845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369974.

The product of its digits is 276480, while the sum is 44.

The square root of 6849845 is about 2617.2208542651. The cubic root of 6849845 is about 189.9154286592.

The spelling of 6849845 in words is "six million, eight hundred forty-nine thousand, eight hundred forty-five".