224666661 has 4 divisors (see below), whose sum is σ = 299555552. Its totient is φ = 149777772.

The previous prime is 224666639. The next prime is 224666671. The reversal of 224666661 is 166666422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 224666661 - 2¹¹ = 224664613 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 (224666671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37444441 + ... + 37444446.

It is an arithmetic number, because the mean of its divisors is an integer number (74888888).

Almost surely, 2^224666661 is an apocalyptic number.

It is an amenable number.

224666661 is a deficient number, since it is larger than the sum of its proper divisors (74888891).

224666661 is an equidigital number, since it uses as much as digits as its factorization.

224666661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74888890.

The product of its digits is 124416, while the sum is 39.

The square root of 224666661 is about 14988.8845815824. The cubic root of 224666661 is about 607.9196903462.

The spelling of 224666661 in words is "two hundred twenty-four million, six hundred sixty-six thousand, six hundred sixty-one".