99966699 has 12 divisors (see below), whose sum is σ = 165024496.
Its totient is φ = 57123792.
The previous prime is 99966673. The next prime is 99966703. The reversal of 99966699 is 99666999.
It is not a de Polignac number, because 99966699 - 29 = 99966187 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 1586773 = 99966699 / (9 + 9 + 9 + 6 + 6 + 6 + 9 + 9).
It is a zygodrome in base 10.
It is not an unprimeable number, because it can be changed into a prime (99966299) 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 11 ways as a sum of consecutive naturals, for example, 793324 + ... + 793449.
Almost surely, 299966699 is an apocalyptic number.
99966699 is a deficient number, since it is larger than the sum of its proper divisors (65057797).
99966699 is a wasteful number, since it uses less digits than its factorization.
99966699 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1586786 (or 1586783 counting only the distinct ones).
The product of its digits is 12754584, while the sum is 63.
The square root of 99966699 is about 9998.3348113573.
The cubic root of 99966699 is about 464.1073544577.
The spelling of 99966699 in words is "ninety-nine million, nine hundred sixty-six thousand, six hundred ninety-nine".