321968 has 10 divisors (see below), whose sum is σ = 623844. Its totient is φ = 160976.

The previous prime is 321961. The next prime is 321983. The reversal of 321968 is 869123.

It is a self number, because there is not a number n which added to its sum of digits gives 321968.

It is not an unprimeable number, because it can be changed into a prime (321961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10046 + ... + 10077.

2³²¹⁹⁶⁸ is an apocalyptic number.

It is an amenable number.

321968 is a deficient number, since it is larger than the sum of its proper divisors (301876).

321968 is a wasteful number, since it uses less digits than its factorization.

321968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20131 (or 20125 counting only the distinct ones).

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

The square root of 321968 is about 567.4222413688. The cubic root of 321968 is about 68.5389694258.

The spelling of 321968 in words is "three hundred twenty-one thousand, nine hundred sixty-eight".