6986221 has 8 divisors (see below), whose sum is σ = 7784064. Its totient is φ = 6215520.

The previous prime is 6986219. The next prime is 6986257. The reversal of 6986221 is 1226896.

It is a happy number.

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 6986221 - 2¹ = 6986219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6986261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6240 + ... + 7273.

It is an arithmetic number, because the mean of its divisors is an integer number (973008).

Almost surely, 2^6986221 is an apocalyptic number.

It is an amenable number.

6986221 is a deficient number, since it is larger than the sum of its proper divisors (797843).

6986221 is a wasteful number, since it uses less digits than its factorization.

6986221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13571.

The product of its digits is 10368, while the sum is 34.

The square root of 6986221 is about 2643.1460421248. The cubic root of 6986221 is about 191.1675202177.

The spelling of 6986221 in words is "six million, nine hundred eighty-six thousand, two hundred twenty-one".