613321 has 4 divisors (see below), whose sum is σ = 634500. Its totient is φ = 592144.

The previous prime is 613297. The next prime is 613337. The reversal of 613321 is 123316.

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

It can be written as a sum of positive squares in 2 ways, for example, as 176400 + 436921 = 420^2 + 661^2 .

It is a cyclic number.

It is not a de Polignac number, because 613321 - 2⁵ = 613289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 613295 and 613304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10546 + ... + 10603.

It is an arithmetic number, because the mean of its divisors is an integer number (158625).

2⁶¹³³²¹ is an apocalyptic number.

It is an amenable number.

613321 is a deficient number, since it is larger than the sum of its proper divisors (21179).

613321 is a wasteful number, since it uses less digits than its factorization.

613321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21178.

The product of its digits is 108, while the sum is 16.

The square root of 613321 is about 783.1481341356. The cubic root of 613321 is about 84.9628903753.

Adding to 613321 its reverse (123316), we get a palindrome (736637).

The spelling of 613321 in words is "six hundred thirteen thousand, three hundred twenty-one".