6905221 has 8 divisors (see below), whose sum is σ = 7314624. Its totient is φ = 6504960.

The previous prime is 6905207. The next prime is 6905231. The reversal of 6905221 is 1225096.

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 6905221 - 2¹⁷ = 6774149 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 (6905201) 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, 700 + ... + 3781.

It is an arithmetic number, because the mean of its divisors is an integer number (914328).

Almost surely, 2^6905221 is an apocalyptic number.

It is an amenable number.

6905221 is a deficient number, since it is larger than the sum of its proper divisors (409403).

6905221 is a wasteful number, since it uses less digits than its factorization.

6905221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 6905221 is about 2627.7787197555. The cubic root of 6905221 is about 190.4258316087.

The spelling of 6905221 in words is "six million, nine hundred five thousand, two hundred twenty-one".