648322 has 4 divisors (see below), whose sum is σ = 972486. Its totient is φ = 324160.

The previous prime is 648317. The next prime is 648331. The reversal of 648322 is 223846.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 346921 + 301401 = 589^2 + 549^2 .

It is an unprimeable number.

648322 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 as a sum of consecutive naturals, namely, 162079 + ... + 162082.

2⁶⁴⁸³²² is an apocalyptic number.

648322 is a deficient number, since it is larger than the sum of its proper divisors (324164).

648322 is a wasteful number, since it uses less digits than its factorization.

648322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324163.

The product of its digits is 2304, while the sum is 25.

The square root of 648322 is about 805.1844509179. The cubic root of 648322 is about 86.5493053129.

The spelling of 648322 in words is "six hundred forty-eight thousand, three hundred twenty-two".