229645 has 8 divisors (see below), whose sum is σ = 296856. Its totient is φ = 169536.

The previous prime is 229639. The next prime is 229681. The reversal of 229645 is 546922.

It can be written as a sum of positive squares in 4 ways, for example, as 19881 + 209764 = 141^2 + 458^2 .

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 229645 - 2³ = 229637 is a prime.

It is a super-3 number, since 3×229645³ = 36332245237533375, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1702 + ... + 1831.

It is an arithmetic number, because the mean of its divisors is an integer number (37107).

2²²⁹⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

229645 is a deficient number, since it is larger than the sum of its proper divisors (67211).

229645 is a wasteful number, since it uses less digits than its factorization.

229645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551.

The product of its digits is 4320, while the sum is 28.

The square root of 229645 is about 479.2128963206. The cubic root of 229645 is about 61.2377179316.

The spelling of 229645 in words is "two hundred twenty-nine thousand, six hundred forty-five".