321676 has 12 divisors (see below), whose sum is σ = 568008. Its totient is φ = 159392.

The previous prime is 321661. The next prime is 321679. The reversal of 321676 is 676123.

321676 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 321676.

It is not an unprimeable number, because it can be changed into a prime (321679) by changing a digit.

321676 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255 + ... + 841.

It is an arithmetic number, because the mean of its divisors is an integer number (47334).

2³²¹⁶⁷⁶ is an apocalyptic number.

It is an amenable number.

321676 is a deficient number, since it is larger than the sum of its proper divisors (246332).

321676 is a wasteful number, since it uses less digits than its factorization.

321676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728 (or 726 counting only the distinct ones).

The product of its digits is 1512, while the sum is 25.

The square root of 321676 is about 567.1648790255. The cubic root of 321676 is about 68.5182433161.

Adding to 321676 its reverse (676123), we get a palindrome (997799).

The spelling of 321676 in words is "three hundred twenty-one thousand, six hundred seventy-six".