613145 has 8 divisors (see below), whose sum is σ = 792456. Its totient is φ = 452736.

The previous prime is 613141. The next prime is 613153. The reversal of 613145 is 541316.

613145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 30976 + 582169 = 176^2 + 763^2 .

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 613145 - 2² = 613141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4652 + ... + 4781.

It is an arithmetic number, because the mean of its divisors is an integer number (99057).

2⁶¹³¹⁴⁵ is an apocalyptic number.

613145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

613145 is a deficient number, since it is larger than the sum of its proper divisors (179311).

613145 is a wasteful number, since it uses less digits than its factorization.

613145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9451.

The product of its digits is 360, while the sum is 20.

The square root of 613145 is about 783.0357590813. The cubic root of 613145 is about 84.9547625492.

The spelling of 613145 in words is "six hundred thirteen thousand, one hundred forty-five".