986666321 has 8 divisors (see below), whose sum is σ = 1015115424. Its totient is φ = 958620960.

The previous prime is 986666311. The next prime is 986666323. The reversal of 986666321 is 123666689.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-986666321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (986666323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95975 + ... + 105756.

It is an arithmetic number, because the mean of its divisors is an integer number (126889428).

Almost surely, 2^986666321 is an apocalyptic number.

It is an amenable number.

986666321 is a deficient number, since it is larger than the sum of its proper divisors (28449103).

986666321 is a wasteful number, since it uses less digits than its factorization.

986666321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201871.

The product of its digits is 559872, while the sum is 47.

The square root of 986666321 is about 31411.2451360974. The cubic root of 986666321 is about 995.5355385786.

The spelling of 986666321 in words is "nine hundred eighty-six million, six hundred sixty-six thousand, three hundred twenty-one".