6849553 has 4 divisors (see below), whose sum is σ = 6859188. Its totient is φ = 6839920.

The previous prime is 6849541. The next prime is 6849559. The reversal of 6849553 is 3559486.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3932289 + 2917264 = 1983^2 + 1708^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6849553 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6849559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3658 + ... + 5203.

It is an arithmetic number, because the mean of its divisors is an integer number (1714797).

Almost surely, 2^6849553 is an apocalyptic number.

It is an amenable number.

6849553 is a deficient number, since it is larger than the sum of its proper divisors (9635).

6849553 is an equidigital number, since it uses as much as digits as its factorization.

6849553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9634.

The product of its digits is 129600, while the sum is 40.

The square root of 6849553 is about 2617.1650693069. The cubic root of 6849553 is about 189.9127300048.

The spelling of 6849553 in words is "six million, eight hundred forty-nine thousand, five hundred fifty-three".