613345 has 8 divisors (see below), whose sum is σ = 740520. Its totient is φ = 487680.

The previous prime is 613337. The next prime is 613357. The reversal of 613345 is 543316.

It can be written as a sum of positive squares in 4 ways, for example, as 208849 + 404496 = 457^2 + 636^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 613345 - 2³ = 613337 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 951 + ... + 1459.

It is an arithmetic number, because the mean of its divisors is an integer number (92565).

2⁶¹³³⁴⁵ is an apocalyptic number.

It is an amenable number.

613345 is a deficient number, since it is larger than the sum of its proper divisors (127175).

613345 is a wasteful number, since it uses less digits than its factorization.

613345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755.

The product of its digits is 1080, while the sum is 22.

The square root of 613345 is about 783.1634567573. The cubic root of 613345 is about 84.9639985947.

The spelling of 613345 in words is "six hundred thirteen thousand, three hundred forty-five".