229664517 has 4 divisors (see below), whose sum is σ = 306219360. Its totient is φ = 153109676.

The previous prime is 229664503. The next prime is 229664527. The reversal of 229664517 is 715466922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 229664517 - 2⁸ = 229664261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229664527) 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, 38277417 + ... + 38277422.

It is an arithmetic number, because the mean of its divisors is an integer number (76554840).

Almost surely, 2^229664517 is an apocalyptic number.

It is an amenable number.

229664517 is a deficient number, since it is larger than the sum of its proper divisors (76554843).

229664517 is an equidigital number, since it uses as much as digits as its factorization.

229664517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76554842.

The product of its digits is 181440, while the sum is 42.

The square root of 229664517 is about 15154.6863049025. The cubic root of 229664517 is about 612.3945270002.

It can be divided in two parts, 229664 and 517, that added together give a triangular number (230181 = T₆₇₈).

The spelling of 229664517 in words is "two hundred twenty-nine million, six hundred sixty-four thousand, five hundred seventeen".