999996699 has 16 divisors (see below), whose sum is σ = 1453197312. Its totient is φ = 607966368.

The previous prime is 999996689. The next prime is 999996707. The reversal of 999996699 is 996699999.

It is not a de Polignac number, because 999996699 - 2¹¹ = 999994651 is a prime.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 999996699.

It is not an unprimeable number, because it can be changed into a prime (999996649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151227 + ... + 157700.

It is an arithmetic number, because the mean of its divisors is an integer number (90824832).

Almost surely, 2^999996699 is an apocalyptic number.

999996699 is a deficient number, since it is larger than the sum of its proper divisors (453200613).

999996699 is a wasteful number, since it uses less digits than its factorization.

999996699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309026.

The product of its digits is 172186884, while the sum is 75.

The square root of 999996699 is about 31622.7244082479. The cubic root of 999996699 is about 999.9988996655.

The spelling of 999996699 in words is "nine hundred ninety-nine million, nine hundred ninety-six thousand, six hundred ninety-nine".