613884 has 12 divisors (see below), whose sum is σ = 1432424. Its totient is φ = 204624.

The previous prime is 613883. The next prime is 613889. The reversal of 613884 is 488316.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25567 + ... + 25590.

2⁶¹³⁸⁸⁴ is an apocalyptic number.

It is an amenable number.

613884 is an abundant number, since it is smaller than the sum of its proper divisors (818540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

613884 is a wasteful number, since it uses less digits than its factorization.

613884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51164 (or 51162 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 613884 is about 783.5074983687. The cubic root of 613884 is about 84.9888797448.

The spelling of 613884 in words is "six hundred thirteen thousand, eight hundred eighty-four".