4221650 has 24 divisors (see below), whose sum is σ = 8195904. Its totient is φ = 1614800.

The previous prime is 4221649. The next prime is 4221653. The reversal of 4221650 is 561224.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4221653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 686 + ... + 2985.

It is an arithmetic number, because the mean of its divisors is an integer number (341496).

Almost surely, 2^4221650 is an apocalyptic number.

4221650 is a deficient number, since it is larger than the sum of its proper divisors (3974254).

4221650 is a wasteful number, since it uses less digits than its factorization.

4221650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706 (or 3701 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 4221650 is about 2054.6654228852. The cubic root of 4221650 is about 161.6196176311.

Adding to 4221650 its reverse (561224), we get a palindrome (4782874).

The spelling of 4221650 in words is "four million, two hundred twenty-one thousand, six hundred fifty".