6223309 has 4 divisors (see below), whose sum is σ = 6589404. Its totient is φ = 5857216.

The previous prime is 6223291. The next prime is 6223319. The reversal of 6223309 is 9033226.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3258025 + 2965284 = 1805^2 + 1722^2 .

It is a cyclic number.

It is not a de Polignac number, because 6223309 - 2⁵ = 6223277 is a prime.

It is an Ulam number.

6223309 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6223319) 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, 183022 + ... + 183055.

It is an arithmetic number, because the mean of its divisors is an integer number (1647351).

Almost surely, 2^6223309 is an apocalyptic number.

It is an amenable number.

6223309 is a deficient number, since it is larger than the sum of its proper divisors (366095).

6223309 is a wasteful number, since it uses less digits than its factorization.

6223309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366094.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 6223309 is about 2494.6560885220. The cubic root of 6223309 is about 183.9389861502.

The spelling of 6223309 in words is "six million, two hundred twenty-three thousand, three hundred nine".