6850221 has 16 divisors (see below), whose sum is σ = 10543104. Its totient is φ = 3875184.

The previous prime is 6850213. The next prime is 6850223. The reversal of 6850221 is 1220586.

It is not a de Polignac number, because 6850221 - 2³ = 6850213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6850191 and 6850200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6850223) 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, 580 + ... + 3746.

It is an arithmetic number, because the mean of its divisors is an integer number (658944).

Almost surely, 2^6850221 is an apocalyptic number.

It is an amenable number.

6850221 is a deficient number, since it is larger than the sum of its proper divisors (3692883).

6850221 is a wasteful number, since it uses less digits than its factorization.

6850221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 6850221 is about 2617.2926851997. The cubic root of 6850221 is about 189.9189035259.

The spelling of 6850221 in words is "six million, eight hundred fifty thousand, two hundred twenty-one".