816366768 has 80 divisors (see below), whose sum is σ = 2537099520. Its totient is φ = 220969728.

The previous prime is 816366763. The next prime is 816366769. The reversal of 816366768 is 867663618.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 816366768.

It is not an unprimeable number, because it can be changed into a prime (816366763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57555 + ... + 70322.

It is an arithmetic number, because the mean of its divisors is an integer number (31713744).

Almost surely, 2^816366768 is an apocalyptic number.

It is an amenable number.

816366768 is an abundant number, since it is smaller than the sum of its proper divisors (1720732752).

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

816366768 is a wasteful number, since it uses less digits than its factorization.

816366768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127914 (or 127908 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The square root of 816366768 is about 28572.1327170374. The cubic root of 816366768 is about 934.6057296564.

The spelling of 816366768 in words is "eight hundred sixteen million, three hundred sixty-six thousand, seven hundred sixty-eight".