321662 has 8 divisors (see below), whose sum is σ = 526392. Its totient is φ = 146200.

The previous prime is 321661. The next prime is 321679. The reversal of 321662 is 266123.

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

It is a d-powerful number, because it can be written as 3⁶ + 2¹³ + 6² + 1 + 6⁷ + 2¹⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321661) 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, 7289 + ... + 7332.

It is an arithmetic number, because the mean of its divisors is an integer number (65799).

2³²¹⁶⁶² is an apocalyptic number.

321662 is a deficient number, since it is larger than the sum of its proper divisors (204730).

321662 is a wasteful number, since it uses less digits than its factorization.

321662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14634.

The product of its digits is 432, while the sum is 20.

The square root of 321662 is about 567.1525368012. The cubic root of 321662 is about 68.5172492835.

Adding to 321662 its reverse (266123), we get a palindrome (587785).

The spelling of 321662 in words is "three hundred twenty-one thousand, six hundred sixty-two".