613309 has 8 divisors (see below), whose sum is σ = 665280. Its totient is φ = 563136.

The previous prime is 613297. The next prime is 613337. The reversal of 613309 is 903316.

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 613309 - 2⁷ = 613181 is a prime.

It is a super-2 number, since 2×613309² = 752295858962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 613309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312 + ... + 1150.

It is an arithmetic number, because the mean of its divisors is an integer number (83160).

2⁶¹³³⁰⁹ is an apocalyptic number.

It is an amenable number.

613309 is a deficient number, since it is larger than the sum of its proper divisors (51971).

613309 is a wasteful number, since it uses less digits than its factorization.

613309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 613309 is about 783.1404727123. The cubic root of 613309 is about 84.9623362547.

The spelling of 613309 in words is "six hundred thirteen thousand, three hundred nine".