322645 has 8 divisors (see below), whose sum is σ = 390456. Its totient is φ = 255936.

The previous prime is 322633. The next prime is 322649. The reversal of 322645 is 546223.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 97969 + 224676 = 313^2 + 474^2 .

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 322645 - 2⁵ = 322613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322649) 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, 679 + ... + 1051.

It is an arithmetic number, because the mean of its divisors is an integer number (48807).

2³²²⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

322645 is a deficient number, since it is larger than the sum of its proper divisors (67811).

322645 is a wasteful number, since it uses less digits than its factorization.

322645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551.

The product of its digits is 1440, while the sum is 22.

The square root of 322645 is about 568.0184856147. The cubic root of 322645 is about 68.5869746085.

Adding to 322645 its reverse (546223), we get a palindrome (868868).

It can be divided in two parts, 322 and 645, that multiplied together give a triangular number (207690 = T₆₄₄).

The spelling of 322645 in words is "three hundred twenty-two thousand, six hundred forty-five".