805517768 has 32 divisors (see below), whose sum is σ = 1734372000. Its totient is φ = 346872960.

The previous prime is 805517767. The next prime is 805517771. The reversal of 805517768 is 867715508.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (805517761) 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 7 ways as a sum of consecutive naturals, for example, 239213 + ... + 242556.

It is an arithmetic number, because the mean of its divisors is an integer number (54199125).

Almost surely, 2^805517768 is an apocalyptic number.

805517768 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

805517768 is an abundant number, since it is smaller than the sum of its proper divisors (928854232).

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

805517768 is a wasteful number, since it uses less digits than its factorization.

805517768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481805 (or 481801 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 47.

The square root of 805517768 is about 28381.6449135705. The cubic root of 805517768 is about 930.4471461359.

The spelling of 805517768 in words is "eight hundred five million, five hundred seventeen thousand, seven hundred sixty-eight".