224181681 has 8 divisors (see below), whose sum is σ = 305268864. Its totient is φ = 146274480.

The previous prime is 224181673. The next prime is 224181691. The reversal of 224181681 is 186181422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 224181681 - 2³ = 224181673 is a prime.

It is a super-2 number, since 2×224181681² = 100514852191971522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (224181691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794830 + ... + 795111.

It is an arithmetic number, because the mean of its divisors is an integer number (38158608).

Almost surely, 2^224181681 is an apocalyptic number.

It is an amenable number.

224181681 is a deficient number, since it is larger than the sum of its proper divisors (81087183).

224181681 is a wasteful number, since it uses less digits than its factorization.

224181681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589991.

The product of its digits is 6144, while the sum is 33.

The square root of 224181681 is about 14972.6978530925. The cubic root of 224181681 is about 607.4819436114.

The spelling of 224181681 in words is "two hundred twenty-four million, one hundred eighty-one thousand, six hundred eighty-one".