9999650 has 24 divisors (see below), whose sum is σ = 19035984. Its totient is φ = 3906000.

The previous prime is 9999637. The next prime is 9999653. The reversal of 9999650 is 569999.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9999595 and 9999604.

It is not an unprimeable number, because it can be changed into a prime (9999653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176 + ... + 4475.

It is an arithmetic number, because the mean of its divisors is an integer number (793166).

Almost surely, 2^9999650 is an apocalyptic number.

9999650 is a deficient number, since it is larger than the sum of its proper divisors (9036334).

9999650 is a wasteful number, since it uses less digits than its factorization.

9999650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4706 (or 4701 counting only the distinct ones).

The product of its (nonzero) digits is 196830, while the sum is 47.

The square root of 9999650 is about 3162.2223198251. Note that the first 3 decimals coincide. The cubic root of 9999650 is about 215.4409554667.

The spelling of 9999650 in words is "nine million, nine hundred ninety-nine thousand, six hundred fifty".