816317716 has 6 divisors (see below), whose sum is σ = 1428556010. Its totient is φ = 408158856.

The previous prime is 816317707. The next prime is 816317779. The reversal of 816317716 is 617713618.

It can be written as a sum of positive squares in only one way, i.e., 585156100 + 231161616 = 24190^2 + 15204^2 .

It is a super-2 number, since 2×816317716² = 1332749226910913312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102039711 + ... + 102039718.

Almost surely, 2^816317716 is an apocalyptic number.

It is an amenable number.

816317716 is a deficient number, since it is larger than the sum of its proper divisors (612238294).

816317716 is a wasteful number, since it uses less digits than its factorization.

816317716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204079433 (or 204079431 counting only the distinct ones).

The product of its digits is 42336, while the sum is 40.

The square root of 816317716 is about 28571.2743152979. The cubic root of 816317716 is about 934.5870104564.

The spelling of 816317716 in words is "eight hundred sixteen million, three hundred seventeen thousand, seven hundred sixteen".