321897 has 8 divisors (see below), whose sum is σ = 436480. Its totient is φ = 210960.

The previous prime is 321889. The next prime is 321901. The reversal of 321897 is 798123.

It is a happy number.

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

It is not a de Polignac number, because 321897 - 2³ = 321889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321817) 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, 697 + ... + 1062.

It is an arithmetic number, because the mean of its divisors is an integer number (54560).

2³²¹⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

321897 is a deficient number, since it is larger than the sum of its proper divisors (114583).

321897 is a wasteful number, since it uses less digits than its factorization.

321897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823.

The product of its digits is 3024, while the sum is 30.

The square root of 321897 is about 567.3596742808. The cubic root of 321897 is about 68.5339310115.

The spelling of 321897 in words is "three hundred twenty-one thousand, eight hundred ninety-seven".