4223666 has 8 divisors (see below), whose sum is σ = 6344364. Its totient is φ = 2108880.

The previous prime is 4223663. The next prime is 4223669. The reversal of 4223666 is 6663224.

It is an interprime number because it is at equal distance from previous prime (4223663) and next prime (4223669).

It can be written as a sum of positive squares in 2 ways, for example, as 2608225 + 1615441 = 1615^2 + 1271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (4223663) 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, 1556 + ... + 3296.

Almost surely, 2^4223666 is an apocalyptic number.

4223666 is a deficient number, since it is larger than the sum of its proper divisors (2120698).

4223666 is a wasteful number, since it uses less digits than its factorization.

4223666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956.

The product of its digits is 10368, while the sum is 29.

The square root of 4223666 is about 2055.1559551528. The cubic root of 4223666 is about 161.6453400618.

The spelling of 4223666 in words is "four million, two hundred twenty-three thousand, six hundred sixty-six".