9966506 has 8 divisors (see below), whose sum is σ = 16308864. Its totient is φ = 4530220.

The previous prime is 9966503. The next prime is 9966511. The reversal of 9966506 is 6056699.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9966503) 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, 226490 + ... + 226533.

It is an arithmetic number, because the mean of its divisors is an integer number (2038608).

Almost surely, 2^9966506 is an apocalyptic number.

9966506 is a deficient number, since it is larger than the sum of its proper divisors (6342358).

9966506 is a wasteful number, since it uses less digits than its factorization.

9966506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453036.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 9966506 is about 3156.9773518351. The cubic root of 9966506 is about 215.2026645009.

The spelling of 9966506 in words is "nine million, nine hundred sixty-six thousand, five hundred six".