9966827 has 4 divisors (see below), whose sum is σ = 10733520. Its totient is φ = 9200136.

The previous prime is 9966823. The next prime is 9966829. The reversal of 9966827 is 7286699.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9966827 - 2² = 9966823 is a prime.

It is a d-powerful number, because it can be written as 9³ + 9⁴ + 6³ + 6³ + 8⁷ + 2²¹ + 7⁸ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9966823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383327 + ... + 383352.

It is an arithmetic number, because the mean of its divisors is an integer number (2683380).

Almost surely, 2^9966827 is an apocalyptic number.

9966827 is a deficient number, since it is larger than the sum of its proper divisors (766693).

9966827 is a wasteful number, since it uses less digits than its factorization.

9966827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766692.

The product of its digits is 326592, while the sum is 47.

The square root of 9966827 is about 3157.0281911950. The cubic root of 9966827 is about 215.2049748830.

The spelling of 9966827 in words is "nine million, nine hundred sixty-six thousand, eight hundred twenty-seven".