230664521 has 8 divisors (see below), whose sum is σ = 246316800. Its totient is φ = 215525520.

The previous prime is 230664509. The next prime is 230664559. The reversal of 230664521 is 125466032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230664521 is a prime.

It is a super-2 number, since 2×230664521² = 106412242496318882, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230661521) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 127391 + ... + 129188.

It is an arithmetic number, because the mean of its divisors is an integer number (30789600).

Almost surely, 2^230664521 is an apocalyptic number.

It is an amenable number.

230664521 is a deficient number, since it is larger than the sum of its proper divisors (15652279).

230664521 is a wasteful number, since it uses less digits than its factorization.

230664521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256639.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 230664521 is about 15187.6436947935. The cubic root of 230664521 is about 613.2820683824.

The spelling of 230664521 in words is "two hundred thirty million, six hundred sixty-four thousand, five hundred twenty-one".