6685223 has 4 divisors (see below), whose sum is σ = 6729648. Its totient is φ = 6640800.

The previous prime is 6685201. The next prime is 6685247. The reversal of 6685223 is 3225866.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6685223 - 2¹⁴ = 6668839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6685223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6685823) 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, 21986 + ... + 22287.

It is an arithmetic number, because the mean of its divisors is an integer number (1682412).

Almost surely, 2^6685223 is an apocalyptic number.

6685223 is a deficient number, since it is larger than the sum of its proper divisors (44425).

6685223 is a wasteful number, since it uses less digits than its factorization.

6685223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44424.

The product of its digits is 17280, while the sum is 32.

The square root of 6685223 is about 2585.5798189188. The cubic root of 6685223 is about 188.3816657916.

The spelling of 6685223 in words is "six million, six hundred eighty-five thousand, two hundred twenty-three".