999999768 has 16 divisors (see below), whose sum is σ = 2499999480. Its totient is φ = 333333248.

The previous prime is 999999761. The next prime is 999999797. The reversal of 999999768 is 867999999.

It is a happy number.

999999768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 999999768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999999761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20833305 + ... + 20833352.

Almost surely, 2^999999768 is an apocalyptic number.

It is an amenable number.

999999768 is an abundant number, since it is smaller than the sum of its proper divisors (1499999712).

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

999999768 is a wasteful number, since it uses less digits than its factorization.

999999768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41666666 (or 41666662 counting only the distinct ones).

The product of its digits is 178564176, while the sum is 75.

The square root of 999999768 is about 31622.7729334415. The cubic root of 999999768 is about 999.9999226667. Note that the first 4 decimals are identical.

The spelling of 999999768 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, seven hundred sixty-eight".