613545 has 8 divisors (see below), whose sum is σ = 981696. Its totient is φ = 327216.

The previous prime is 613523. The next prime is 613549. The reversal of 613545 is 545316.

613545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 613545 - 2⁸ = 613289 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

613545 is a lucky number.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (613549) 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, 20437 + ... + 20466.

It is an arithmetic number, because the mean of its divisors is an integer number (122712).

2⁶¹³⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

613545 is a deficient number, since it is larger than the sum of its proper divisors (368151).

613545 is a wasteful number, since it uses less digits than its factorization.

613545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40911.

The product of its digits is 1800, while the sum is 24.

The square root of 613545 is about 783.2911336151. The cubic root of 613545 is about 84.9732326327.

The spelling of 613545 in words is "six hundred thirteen thousand, five hundred forty-five".