2222664 has 32 divisors (see below), whose sum is σ = 5709120. Its totient is φ = 720576.

The previous prime is 2222663. The next prime is 2222683. The reversal of 2222664 is 4662222.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (2222663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364 + ... + 2139.

It is an arithmetic number, because the mean of its divisors is an integer number (178410).

2^2222664 is an apocalyptic number.

2222664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2222664 is an abundant number, since it is smaller than the sum of its proper divisors (3486456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2222664 is a wasteful number, since it uses less digits than its factorization.

2222664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549 (or 2545 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 2222664 is about 1490.8601544075. The cubic root of 2222664 is about 130.5042349736.

Adding to 2222664 its reverse (4662222), we get a palindrome (6884886).

The spelling of 2222664 in words is "two million, two hundred twenty-two thousand, six hundred sixty-four".