4223655 has 24 divisors (see below), whose sum is σ = 7480512. Its totient is φ = 2203584.

The previous prime is 4223629. The next prime is 4223663. The reversal of 4223655 is 5563224.

4223655 is a `hidden beast` number, since 4 + 2 + 2 + 3 + 655 = 666.

It is not a de Polignac number, because 4223655 - 2²⁰ = 3175079 is a prime.

4223655 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1117 + ... + 3113.

It is an arithmetic number, because the mean of its divisors is an integer number (311688).

Almost surely, 2^4223655 is an apocalyptic number.

4223655 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4223655 is a deficient number, since it is larger than the sum of its proper divisors (3256857).

4223655 is a wasteful number, since it uses less digits than its factorization.

4223655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055 (or 2052 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 4223655 is about 2055.1532789551. The cubic root of 4223655 is about 161.6451997335.

Adding to 4223655 its reverse (5563224), we get a palindrome (9786879).

The spelling of 4223655 in words is "four million, two hundred twenty-three thousand, six hundred fifty-five".