229612645 has 4 divisors (see below), whose sum is σ = 275535180. Its totient is φ = 183690112.

The previous prime is 229612637. The next prime is 229612699. The reversal of 229612645 is 546216922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546216922 = 2 ⋅273108461.

It can be written as a sum of positive squares in 2 ways, for example, as 179613604 + 49999041 = 13402^2 + 7071^2 .

It is a cyclic number.

It is not a de Polignac number, because 229612645 - 2³ = 229612637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22961260 + ... + 22961269.

It is an arithmetic number, because the mean of its divisors is an integer number (68883795).

Almost surely, 2^229612645 is an apocalyptic number.

It is an amenable number.

229612645 is a deficient number, since it is larger than the sum of its proper divisors (45922535).

229612645 is an equidigital number, since it uses as much as digits as its factorization.

229612645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45922534.

The product of its digits is 51840, while the sum is 37.

The square root of 229612645 is about 15152.9747904496. The cubic root of 229612645 is about 612.3484184108.

It can be divided in two parts, 2296 and 12645, that added together give a palindrome (14941).

The spelling of 229612645 in words is "two hundred twenty-nine million, six hundred twelve thousand, six hundred forty-five".