816085364 has 12 divisors (see below), whose sum is σ = 1430041284. Its totient is φ = 407502144.

The previous prime is 816085351. The next prime is 816085381. The reversal of 816085364 is 463580618.

It can be written as a sum of positive squares in 2 ways, for example, as 599760100 + 216325264 = 24490^2 + 14708^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131729 + ... + 137784.

It is an arithmetic number, because the mean of its divisors is an integer number (119170107).

Almost surely, 2^816085364 is an apocalyptic number.

It is an amenable number.

816085364 is a deficient number, since it is larger than the sum of its proper divisors (613955920).

816085364 is a wasteful number, since it uses less digits than its factorization.

816085364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270274 (or 270272 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 816085364 is about 28567.2078439598. The cubic root of 816085364 is about 934.4983302104.

The spelling of 816085364 in words is "eight hundred sixteen million, eighty-five thousand, three hundred sixty-four".