6814221 has 4 divisors (see below), whose sum is σ = 9085632. Its totient is φ = 4542812.

The previous prime is 6814219. The next prime is 6814231. The reversal of 6814221 is 1224186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6814221 - 2¹ = 6814219 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 6814191 and 6814200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6814231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1135701 + ... + 1135706.

It is an arithmetic number, because the mean of its divisors is an integer number (2271408).

Almost surely, 2^6814221 is an apocalyptic number.

It is an amenable number.

6814221 is a deficient number, since it is larger than the sum of its proper divisors (2271411).

6814221 is a wasteful number, since it uses less digits than its factorization.

6814221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271410.

The product of its digits is 768, while the sum is 24.

The square root of 6814221 is about 2610.4062902161. The cubic root of 6814221 is about 189.5856251008.

The spelling of 6814221 in words is "six million, eight hundred fourteen thousand, two hundred twenty-one".