229664823 has 4 divisors (see below), whose sum is σ = 306219768. Its totient is φ = 153109880.

The previous prime is 229664807. The next prime is 229664839. The reversal of 229664823 is 328466922.

229664823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (229664807) and next prime (229664839).

It is a cyclic number.

It is not a de Polignac number, because 229664823 - 2⁴ = 229664807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229664873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38277468 + ... + 38277473.

It is an arithmetic number, because the mean of its divisors is an integer number (76554942).

Almost surely, 2^229664823 is an apocalyptic number.

229664823 is a deficient number, since it is larger than the sum of its proper divisors (76554945).

229664823 is an equidigital number, since it uses as much as digits as its factorization.

229664823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76554944.

The product of its digits is 248832, while the sum is 42.

The square root of 229664823 is about 15154.6964007861. The cubic root of 229664823 is about 612.3947989805.

The spelling of 229664823 in words is "two hundred twenty-nine million, six hundred sixty-four thousand, eight hundred twenty-three".