816717080 has 16 divisors (see below), whose sum is σ = 1837613520. Its totient is φ = 326686816.

The previous prime is 816717079. The next prime is 816717091. The reversal of 816717080 is 80717618.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 10208924 + ... + 10209003.

It is an arithmetic number, because the mean of its divisors is an integer number (114850845).

Almost surely, 2^816717080 is an apocalyptic number.

It is an amenable number.

816717080 is an abundant number, since it is smaller than the sum of its proper divisors (1020896440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

816717080 is a wasteful number, since it uses less digits than its factorization.

816717080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20417938 (or 20417934 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 38.

The square root of 816717080 is about 28578.2623684506. The cubic root of 816717080 is about 934.7393937542.

The spelling of 816717080 in words is "eight hundred sixteen million, seven hundred seventeen thousand, eighty".