2661224 has 16 divisors (see below), whose sum is σ = 5025120. Its totient is φ = 1321200.

The previous prime is 2661221. The next prime is 2661233. The reversal of 2661224 is 4221662.

It is a super-2 number, since 2×2661224² = 14164226356352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2661224.

It is not an unprimeable number, because it can be changed into a prime (2661221) 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, 107 + ... + 2309.

It is an arithmetic number, because the mean of its divisors is an integer number (314070).

2^2661224 is an apocalyptic number.

It is an amenable number.

2661224 is a deficient number, since it is larger than the sum of its proper divisors (2363896).

2661224 is a wasteful number, since it uses less digits than its factorization.

2661224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360 (or 2356 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 2661224 is about 1631.3258411488. The cubic root of 2661224 is about 138.5778472549.

Adding to 2661224 its reverse (4221662), we get a palindrome (6882886).

The spelling of 2661224 in words is "two million, six hundred sixty-one thousand, two hundred twenty-four".