224938661 has 4 divisors (see below), whose sum is σ = 225102924. Its totient is φ = 224774400.

The previous prime is 224938601. The next prime is 224938667. The reversal of 224938661 is 166839422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 139098436 + 85840225 = 11794^2 + 9265^2 .

It is a cyclic number.

It is not a de Polignac number, because 224938661 - 2²⁶ = 157829797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224938667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80060 + ... + 82821.

It is an arithmetic number, because the mean of its divisors is an integer number (56275731).

Almost surely, 2^224938661 is an apocalyptic number.

It is an amenable number.

224938661 is a deficient number, since it is larger than the sum of its proper divisors (164263).

224938661 is a wasteful number, since it uses less digits than its factorization.

224938661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164262.

The product of its digits is 124416, while the sum is 41.

The square root of 224938661 is about 14997.9552272968. The cubic root of 224938661 is about 608.1649239876.

The spelling of 224938661 in words is "two hundred twenty-four million, nine hundred thirty-eight thousand, six hundred sixty-one".