823666328 has 8 divisors (see below), whose sum is σ = 1544374380. Its totient is φ = 411833160.

The previous prime is 823666313. The next prime is 823666387.

It is a happy number.

823666328 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51479138 + ... + 51479153.

Almost surely, 2^823666328 is an apocalyptic number.

It is an amenable number.

823666328 is a deficient number, since it is larger than the sum of its proper divisors (720708052).

823666328 is a wasteful number, since it uses less digits than its factorization.

823666328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102958297 (or 102958293 counting only the distinct ones).

The product of its digits is 497664, while the sum is 44.

The square root of 823666328 is about 28699.5875928558. The cubic root of 823666328 is about 937.3830668498.

The spelling of 823666328 in words is "eight hundred twenty-three million, six hundred sixty-six thousand, three hundred twenty-eight".