986321 has 6 divisors (see below), whose sum is σ = 1147410. Its totient is φ = 845376.

The previous prime is 986287. The next prime is 986333. The reversal of 986321 is 123689.

986321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 960400 + 25921 = 980^2 + 161^2 .

It is not a de Polignac number, because 986321 - 2⁶ = 986257 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 (986351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10016 + ... + 10113.

It is an arithmetic number, because the mean of its divisors is an integer number (191235).

2⁹⁸⁶³²¹ is an apocalyptic number.

It is an amenable number.

986321 is a deficient number, since it is larger than the sum of its proper divisors (161089).

986321 is a wasteful number, since it uses less digits than its factorization.

986321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20143 (or 20136 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 986321 is about 993.1369492673. The cubic root of 986321 is about 99.5419383321.

The spelling of 986321 in words is "nine hundred eighty-six thousand, three hundred twenty-one".