816556324 has 48 divisors (see below), whose sum is σ = 1481195520. Its totient is φ = 393737760.

The previous prime is 816556271. The next prime is 816556343. The reversal of 816556324 is 423655618.

It is a super-3 number, since 3×816556324³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4275069 + ... + 4275259.

It is an arithmetic number, because the mean of its divisors is an integer number (30858240).

Almost surely, 2^816556324 is an apocalyptic number.

It is an amenable number.

816556324 is a deficient number, since it is larger than the sum of its proper divisors (664639196).

816556324 is a wasteful number, since it uses less digits than its factorization.

816556324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 518 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 816556324 is about 28575.4496727523. The cubic root of 816556324 is about 934.6780608767.

The spelling of 816556324 in words is "eight hundred sixteen million, five hundred fifty-six thousand, three hundred twenty-four".