613045 has 4 divisors (see below), whose sum is σ = 735660. Its totient is φ = 490432.

The previous prime is 613013. The next prime is 613049. The reversal of 613045 is 540316.

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 191844 + 421201 = 438^2 + 649^2 .

It is a cyclic number.

It is not a de Polignac number, because 613045 - 2⁵ = 613013 is a prime.

613045 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613049) 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, 61300 + ... + 61309.

It is an arithmetic number, because the mean of its divisors is an integer number (183915).

2⁶¹³⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

613045 is a deficient number, since it is larger than the sum of its proper divisors (122615).

613045 is a wasteful number, since it uses less digits than its factorization.

613045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122614.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 613045 is about 782.9719024333. The cubic root of 613045 is about 84.9501437732.

It can be divided in two parts, 61 and 3045, that multiplied together give a triangular number (185745 = T₆₀₉).

The spelling of 613045 in words is "six hundred thirteen thousand, forty-five".