9966699 has 8 divisors (see below), whose sum is σ = 14765520. Its totient is φ = 6644448.

The previous prime is 9966689. The next prime is 9966701.

9966699 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9966699 - 2⁵ = 9966667 is a prime.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9966629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184542 + ... + 184595.

It is an arithmetic number, because the mean of its divisors is an integer number (1845690).

Almost surely, 2^9966699 is an apocalyptic number.

9966699 is a deficient number, since it is larger than the sum of its proper divisors (4798821).

9966699 is a wasteful number, since it uses less digits than its factorization.

9966699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369146 (or 369140 counting only the distinct ones).

The product of its digits is 1417176, while the sum is 54.

The square root of 9966699 is about 3157.0079189004. The cubic root of 9966699 is about 215.2040536151.

The spelling of 9966699 in words is "nine million, nine hundred sixty-six thousand, six hundred ninety-nine".