9999705 has 8 divisors (see below), whose sum is σ = 15999552.
Its totient is φ = 5333168.
The previous prime is 9999677. The next prime is 9999713. The reversal of 9999705 is 5079999.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 9999705 - 29 = 9999193 is a prime.
It is a Curzon number.
It is an unprimeable number.
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, 333309 + ... + 333338.
It is an arithmetic number, because the mean of its divisors is an integer number (1999944).
Almost surely, 29999705 is an apocalyptic number.
It is an amenable number.
9999705 is a deficient number, since it is larger than the sum of its proper divisors (5999847).
9999705 is a wasteful number, since it uses less digits than its factorization.
9999705 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 666655.
The product of its (nonzero) digits is 229635, while the sum is 48.
The square root of 9999705 is about 3162.2310162289.
The cubic root of 9999705 is about 215.4413504549.
The spelling of 9999705 in words is "nine million, nine hundred ninety-nine thousand, seven hundred five".