224606621 has 2 divisors, whose sum is σ = 224606622. Its totient is φ = 224606620.

The previous prime is 224606573. The next prime is 224606639. The reversal of 224606621 is 126606422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122899396 + 101707225 = 11086^2 + 10085^2 .

It is a cyclic number.

It is not a de Polignac number, because 224606621 - 2¹⁴ = 224590237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224606821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112303310 + 112303311.

It is an arithmetic number, because the mean of its divisors is an integer number (112303311).

Almost surely, 2^224606621 is an apocalyptic number.

It is an amenable number.

224606621 is a deficient number, since it is larger than the sum of its proper divisors (1).

224606621 is an equidigital number, since it uses as much as digits as its factorization.

224606621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 224606621 is about 14986.8816302792. The cubic root of 224606621 is about 607.8655319619.

The spelling of 224606621 in words is "two hundred twenty-four million, six hundred six thousand, six hundred twenty-one".