224505643 has 2 divisors, whose sum is σ = 224505644. Its totient is φ = 224505642.

The previous prime is 224505637. The next prime is 224505661. The reversal of 224505643 is 346505422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 224505643 - 2¹⁷ = 224374571 is a prime.

It is not a weakly prime, because it can be changed into another prime (224505943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112252821 + 112252822.

It is an arithmetic number, because the mean of its divisors is an integer number (112252822).

Almost surely, 2^224505643 is an apocalyptic number.

224505643 is a deficient number, since it is larger than the sum of its proper divisors (1).

224505643 is an equidigital number, since it uses as much as digits as its factorization.

224505643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 224505643 is about 14983.5123719374. The cubic root of 224505643 is about 607.7744241602.

The spelling of 224505643 in words is "two hundred twenty-four million, five hundred five thousand, six hundred forty-three".