320648033 has 18 divisors (see below), whose sum is σ = 351064422. Its totient is φ = 291849600.

The previous prime is 320648017. The next prime is 320648051. The reversal of 320648033 is 330846023.

It can be written as a sum of positive squares in 3 ways, for example, as 261404224 + 59243809 = 16168^2 + 7697^2 .

It is not a de Polignac number, because 320648033 - 2⁴ = 320648017 is a prime.

It is a super-2 number, since 2×320648033² = 205630322133538178, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 320647987 and 320648005.

It is not an unprimeable number, because it can be changed into a prime (320648063) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3174683 + ... + 3174783.

It is an arithmetic number, because the mean of its divisors is an integer number (19503579).

Almost surely, 2^320648033 is an apocalyptic number.

It is an amenable number.

320648033 is a deficient number, since it is larger than the sum of its proper divisors (30416389).

320648033 is an equidigital number, since it uses as much as digits as its factorization.

320648033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 320648033 is about 17906.6477320575. The cubic root of 320648033 is about 684.4517843638.

The spelling of 320648033 in words is "three hundred twenty million, six hundred forty-eight thousand, thirty-three".