999956766 has 8 divisors (see below), whose sum is σ = 1999913544. Its totient is φ = 333318920.

The previous prime is 999956761. The next prime is 999956767. The reversal of 999956766 is 667659999.

999956766 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

999956766 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 999956697 and 999956706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999956761) 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, 83329725 + ... + 83329736.

It is an arithmetic number, because the mean of its divisors is an integer number (249989193).

Almost surely, 2^999956766 is an apocalyptic number.

999956766 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

999956766 is a wasteful number, since it uses less digits than its factorization.

999956766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166659466.

The product of its digits is 49601160, while the sum is 66.

The square root of 999956766 is about 31622.0930047333. The cubic root of 999956766 is about 999.9855884590.

The spelling of 999956766 in words is "nine hundred ninety-nine million, nine hundred fifty-six thousand, seven hundred sixty-six".