2224661 has 2 divisors, whose sum is σ = 2224662. Its totient is φ = 2224660.

The previous prime is 2224657. The next prime is 2224667. The reversal of 2224661 is 1664222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1575025 + 649636 = 1255^2 + 806^2 .

It is a cyclic number.

It is not a de Polignac number, because 2224661 - 2² = 2224657 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2224667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1112330 + 1112331.

It is an arithmetic number, because the mean of its divisors is an integer number (1112331).

2^2224661 is an apocalyptic number.

It is an amenable number.

2224661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2224661 is an equidigital number, since it uses as much as digits as its factorization.

2224661 is an evil number, because the sum of its binary digits is even.

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

The square root of 2224661 is about 1491.5297516309. The cubic root of 2224661 is about 130.5433080475.

Adding to 2224661 its reverse (1664222), we get a palindrome (3888883).

The spelling of 2224661 in words is "two million, two hundred twenty-four thousand, six hundred sixty-one".