224891647 has 2 divisors, whose sum is σ = 224891648. Its totient is φ = 224891646.

The previous prime is 224891633. The next prime is 224891651. The reversal of 224891647 is 746198422.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224891647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224894647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112445823 + 112445824.

It is an arithmetic number, because the mean of its divisors is an integer number (112445824).

Almost surely, 2^224891647 is an apocalyptic number.

224891647 is a deficient number, since it is larger than the sum of its proper divisors (1).

224891647 is an equidigital number, since it uses as much as digits as its factorization.

224891647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 43.

The square root of 224891647 is about 14996.3877984000. The cubic root of 224891647 is about 608.1225505722.

The spelling of 224891647 in words is "two hundred twenty-four million, eight hundred ninety-one thousand, six hundred forty-seven".