4640223 has 16 divisors (see below), whose sum is σ = 7162880. Its totient is φ = 2617056.

The previous prime is 4640221. The next prime is 4640231. The reversal of 4640223 is 3220464.

It is not a de Polignac number, because 4640223 - 2¹ = 4640221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 4640223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4640221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261 + ... + 3057.

It is an arithmetic number, because the mean of its divisors is an integer number (447680).

Almost surely, 2^4640223 is an apocalyptic number.

4640223 is a deficient number, since it is larger than the sum of its proper divisors (2522657).

4640223 is a wasteful number, since it uses less digits than its factorization.

4640223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2886.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 4640223 is about 2154.1176848074. The cubic root of 4640223 is about 166.7936902765.

Adding to 4640223 its reverse (3220464), we get a palindrome (7860687).

The spelling of 4640223 in words is "four million, six hundred forty thousand, two hundred twenty-three".