229648565 has 4 divisors (see below), whose sum is σ = 275578284. Its totient is φ = 183718848.

The previous prime is 229648561. The next prime is 229648619. The reversal of 229648565 is 565846922.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 565846922 = 2 ⋅282923461.

It can be written as a sum of positive squares in 2 ways, for example, as 137757169 + 91891396 = 11737^2 + 9586^2 .

It is a cyclic number.

It is not a de Polignac number, because 229648565 - 2² = 229648561 is a prime.

It is a super-3 number, since 3×229648565³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229648561) 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, 22964852 + ... + 22964861.

It is an arithmetic number, because the mean of its divisors is an integer number (68894571).

Almost surely, 2^229648565 is an apocalyptic number.

It is an amenable number.

229648565 is a deficient number, since it is larger than the sum of its proper divisors (45929719).

229648565 is an equidigital number, since it uses as much as digits as its factorization.

229648565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45929718.

The product of its digits is 1036800, while the sum is 47.

The square root of 229648565 is about 15154.1599899170. The cubic root of 229648565 is about 612.3803481394.

The spelling of 229648565 in words is "two hundred twenty-nine million, six hundred forty-eight thousand, five hundred sixty-five".