4221764 has 12 divisors (see below), whose sum is σ = 7460544. Its totient is φ = 2090184.

The previous prime is 4221761. The next prime is 4221769. The reversal of 4221764 is 4671224.

It is not an unprimeable number, because it can be changed into a prime (4221761) 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, 4712 + ... + 5535.

It is an arithmetic number, because the mean of its divisors is an integer number (621712).

Almost surely, 2^4221764 is an apocalyptic number.

It is an amenable number.

4221764 is a deficient number, since it is larger than the sum of its proper divisors (3238780).

4221764 is a wasteful number, since it uses less digits than its factorization.

4221764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10354 (or 10352 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 4221764 is about 2054.6931644409. The cubic root of 4221764 is about 161.6210723918.

Adding to 4221764 its reverse (4671224), we get a palindrome (8892988).

The spelling of 4221764 in words is "four million, two hundred twenty-one thousand, seven hundred sixty-four".