2656223 has 4 divisors (see below), whose sum is σ = 2674200. Its totient is φ = 2638248.

The previous prime is 2656211. The next prime is 2656229. The reversal of 2656223 is 3226562.

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 2656223 - 2⁴ = 2656207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2656192 and 2656201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8765 + ... + 9062.

It is an arithmetic number, because the mean of its divisors is an integer number (668550).

2^2656223 is an apocalyptic number.

2656223 is a deficient number, since it is larger than the sum of its proper divisors (17977).

2656223 is a wasteful number, since it uses less digits than its factorization.

2656223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17976.

The product of its digits is 4320, while the sum is 26.

The square root of 2656223 is about 1629.7923180577. The cubic root of 2656223 is about 138.4909871756.

The spelling of 2656223 in words is "two million, six hundred fifty-six thousand, two hundred twenty-three".