999966750 has 32 divisors (see below), whose sum is σ = 2495918880. Its totient is φ = 266657600.

The previous prime is 999966739. The next prime is 999966767. The reversal of 999966750 is 57669999.

999966750 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×999966750² = 1999867002211125000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665895 + ... + 667394.

It is an arithmetic number, because the mean of its divisors is an integer number (77997465).

Almost surely, 2^999966750 is an apocalyptic number.

999966750 is an abundant number, since it is smaller than the sum of its proper divisors (1495952130).

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

999966750 is a wasteful number, since it uses less digits than its factorization.

999966750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333309 (or 1333299 counting only the distinct ones).

The product of its (nonzero) digits is 8266860, while the sum is 60.

The square root of 999966750 is about 31622.2508686526. The cubic root of 999966750 is about 999.9889165438.

The spelling of 999966750 in words is "nine hundred ninety-nine million, nine hundred sixty-six thousand, seven hundred fifty".