613604 has 12 divisors (see below), whose sum is σ = 1082928. Its totient is φ = 304200.

The previous prime is 613597. The next prime is 613607. The reversal of 613604 is 406316.

613604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (613607) by changing a digit.

613604 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62 + ... + 1109.

It is an arithmetic number, because the mean of its divisors is an integer number (90244).

2⁶¹³⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

613604 is a deficient number, since it is larger than the sum of its proper divisors (469324).

613604 is a wasteful number, since it uses less digits than its factorization.

613604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306 (or 1304 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 613604 is about 783.3287943131. The cubic root of 613604 is about 84.9759562906.

The spelling of 613604 in words is "six hundred thirteen thousand, six hundred four".