9866801 has 4 divisors (see below), whose sum is σ = 11276352. Its totient is φ = 8457252.

The previous prime is 9866797. The next prime is 9866803. The reversal of 9866801 is 1086689.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9866801 - 2² = 9866797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9866803) 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, 704765 + ... + 704778.

It is an arithmetic number, because the mean of its divisors is an integer number (2819088).

Almost surely, 2^9866801 is an apocalyptic number.

It is an amenable number.

9866801 is a deficient number, since it is larger than the sum of its proper divisors (1409551).

9866801 is a wasteful number, since it uses less digits than its factorization.

9866801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409550.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 9866801 is about 3141.1464467611. The cubic root of 9866801 is about 214.4826283695.

The spelling of 9866801 in words is "nine million, eight hundred sixty-six thousand, eight hundred one".