6849521 has 8 divisors (see below), whose sum is σ = 8288640. Its totient is φ = 5525568.

The previous prime is 6849509. The next prime is 6849527. The reversal of 6849521 is 1259486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6849521 - 2¹⁴ = 6833137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6849527) 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 7 ways as a sum of consecutive naturals, for example, 28661 + ... + 28898.

It is an arithmetic number, because the mean of its divisors is an integer number (1036080).

Almost surely, 2^6849521 is an apocalyptic number.

It is an amenable number.

6849521 is a deficient number, since it is larger than the sum of its proper divisors (1439119).

6849521 is a wasteful number, since it uses less digits than its factorization.

6849521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57583.

The product of its digits is 17280, while the sum is 35.

The square root of 6849521 is about 2617.1589558145. The cubic root of 6849521 is about 189.9124342571.

Subtracting from 6849521 its sum of digits (35), we obtain a palindrome (6849486).

The spelling of 6849521 in words is "six million, eight hundred forty-nine thousand, five hundred twenty-one".