9869966 has 8 divisors (see below), whose sum is σ = 15282624. Its totient is φ = 4775760.

The previous prime is 9869963. The next prime is 9869969. The reversal of 9869966 is 6699689.

9869966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9869963) and next prime (9869969).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9869963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79535 + ... + 79658.

It is an arithmetic number, because the mean of its divisors is an integer number (1910328).

Almost surely, 2^9869966 is an apocalyptic number.

9869966 is a deficient number, since it is larger than the sum of its proper divisors (5412658).

9869966 is a wasteful number, since it uses less digits than its factorization.

9869966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159226.

The product of its digits is 1259712, while the sum is 53.

The square root of 9869966 is about 3141.6502033167. The cubic root of 9869966 is about 214.5055593055.

The spelling of 9869966 in words is "nine million, eight hundred sixty-nine thousand, nine hundred sixty-six".