613403 has 4 divisors (see below), whose sum is σ = 701040. Its totient is φ = 525768.

The previous prime is 613381. The next prime is 613421. The reversal of 613403 is 304316.

613403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 613403 - 2¹² = 609307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43808 + ... + 43821.

It is an arithmetic number, because the mean of its divisors is an integer number (175260).

2⁶¹³⁴⁰³ is an apocalyptic number.

613403 is a deficient number, since it is larger than the sum of its proper divisors (87637).

613403 is an equidigital number, since it uses as much as digits as its factorization.

613403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87636.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 613403 is about 783.2004851888. The cubic root of 613403 is about 84.9666766724.

Adding to 613403 its reverse (304316), we get a palindrome (917719).

The spelling of 613403 in words is "six hundred thirteen thousand, four hundred three".