816930724 has 27 divisors (see below), whose sum is σ = 1480444833. Its totient is φ = 394431600.

The previous prime is 816930703. The next prime is 816930827. The reversal of 816930724 is 427039618.

The square root of 816930724 is 28582.

It is a perfect power (a square), and thus also a powerful number.

816930724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 261857124 + 555073600 = 16182^2 + 23560^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1771854 + ... + 1772314.

Almost surely, 2^816930724 is an apocalyptic number.

816930724 is the 28582-nd square number.

It is an amenable number.

816930724 is a deficient number, since it is larger than the sum of its proper divisors (663514109).

816930724 is an equidigital number, since it uses as much as digits as its factorization.

816930724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The cubic root of 816930724 is about 934.8208924181.

The spelling of 816930724 in words is "eight hundred sixteen million, nine hundred thirty thousand, seven hundred twenty-four".