224641987 has 2 divisors, whose sum is σ = 224641988. Its totient is φ = 224641986.

The previous prime is 224641979. The next prime is 224642101. The reversal of 224641987 is 789146422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 224641987 - 2³ = 224641979 is a prime.

It is not a weakly prime, because it can be changed into another prime (224642987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112320993 + 112320994.

It is an arithmetic number, because the mean of its divisors is an integer number (112320994).

Almost surely, 2^224641987 is an apocalyptic number.

224641987 is a deficient number, since it is larger than the sum of its proper divisors (1).

224641987 is an equidigital number, since it uses as much as digits as its factorization.

224641987 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 224641987 is about 14988.0614823932. The cubic root of 224641987 is about 607.8974346192.

The spelling of 224641987 in words is "two hundred twenty-four million, six hundred forty-one thousand, nine hundred eighty-seven".