224720689 has 8 divisors (see below), whose sum is σ = 230639400. Its totient is φ = 218864256.

The previous prime is 224720687. The next prime is 224720707. The reversal of 224720689 is 986027422.

It can be written as a sum of positive squares in 4 ways, for example, as 124880625 + 99840064 = 11175^2 + 9992^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 224720689 - 2¹ = 224720687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224720687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8214 + ... + 22735.

It is an arithmetic number, because the mean of its divisors is an integer number (28829925).

Almost surely, 2^224720689 is an apocalyptic number.

It is an amenable number.

224720689 is a deficient number, since it is larger than the sum of its proper divisors (5918711).

224720689 is a wasteful number, since it uses less digits than its factorization.

224720689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31139.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 224720689 is about 14990.6867421076. The cubic root of 224720689 is about 607.9684174283.

The spelling of 224720689 in words is "two hundred twenty-four million, seven hundred twenty thousand, six hundred eighty-nine".