816550713 has 42 divisors (see below), whose sum is σ = 1345826202. Its totient is φ = 494825760.

The previous prime is 816550699. The next prime is 816550723. The reversal of 816550713 is 317055618.

816550713 is a `hidden beast` number, since 81 + 65 + 507 + 13 = 666.

816550713 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., 509495184 + 307055529 = 22572^2 + 17523^2 .

It is not a de Polignac number, because 816550713 - 2⁶ = 816550649 is a prime.

It is a super-3 number, since 3×816550713³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816550723) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 83581 + ... + 92837.

It is an arithmetic number, because the mean of its divisors is an integer number (32043481).

Almost surely, 2^816550713 is an apocalyptic number.

It is an amenable number.

816550713 is a deficient number, since it is larger than the sum of its proper divisors (529275489).

816550713 is an equidigital number, since it uses as much as digits as its factorization.

816550713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9297 (or 9271 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 816550713 is about 28575.3514939012. The cubic root of 816550713 is about 934.6759199790.

The spelling of 816550713 in words is "eight hundred sixteen million, five hundred fifty thousand, seven hundred thirteen".