229775616 has 180 divisors, whose sum is σ = 783522432. Its totient is φ = 65608704.

The previous prime is 229775591. The next prime is 229775633. The reversal of 229775616 is 616577922.

229775616 is a `hidden beast` number, since 2 + 29 + 7 + 7 + 5 + 616 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 144361 + ... + 145943.

Almost surely, 2^229775616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229775616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391761216).

229775616 is an abundant number, since it is smaller than the sum of its proper divisors (553746816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

229775616 is an equidigital number, since it uses as much as digits as its factorization.

229775616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618 (or 1595 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 229775616 is about 15158.3513615432. The cubic root of 229775616 is about 612.4932586236.

The spelling of 229775616 in words is "two hundred twenty-nine million, seven hundred seventy-five thousand, six hundred sixteen".