6849655 has 16 divisors (see below), whose sum is σ = 8608320. Its totient is φ = 5225472.

The previous prime is 6849637. The next prime is 6849659. The reversal of 6849655 is 5569486.

It is a 10-Lehmer number, since φ(6849655) divides (6849655-1)¹⁰.

It is a cyclic number.

It is not a de Polignac number, because 6849655 - 2⁷ = 6849527 is a prime.

6849655 is a lucky number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6849659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13822 + ... + 14308.

It is an arithmetic number, because the mean of its divisors is an integer number (538020).

Almost surely, 2^6849655 is an apocalyptic number.

6849655 is a deficient number, since it is larger than the sum of its proper divisors (1758665).

6849655 is a wasteful number, since it uses less digits than its factorization.

6849655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618.

The product of its digits is 259200, while the sum is 43.

The square root of 6849655 is about 2617.1845559685. The cubic root of 6849655 is about 189.9136726941.

The spelling of 6849655 in words is "six million, eight hundred forty-nine thousand, six hundred fifty-five".