609321 has 8 divisors (see below), whose sum is σ = 817344. Its totient is φ = 403760.

The previous prime is 609313. The next prime is 609337. The reversal of 609321 is 123906.

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

It is a cyclic number.

It is not a de Polignac number, because 609321 - 2³ = 609313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (609361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76 + ... + 1106.

It is an arithmetic number, because the mean of its divisors is an integer number (102168).

2⁶⁰⁹³²¹ is an apocalyptic number.

It is an amenable number.

609321 is a deficient number, since it is larger than the sum of its proper divisors (208023).

609321 is a wasteful number, since it uses less digits than its factorization.

609321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 609321 is about 780.5901613523. The cubic root of 609321 is about 84.7777817222. Note that the first 4 decimals are identical.

The spelling of 609321 in words is "six hundred nine thousand, three hundred twenty-one".