613684 has 6 divisors (see below), whose sum is σ = 1073954. Its totient is φ = 306840.

The previous prime is 613673. The next prime is 613699. The reversal of 613684 is 486316.

613684 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 only one way, i.e., 435600 + 178084 = 660^2 + 422^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76707 + ... + 76714.

2⁶¹³⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

613684 is a deficient number, since it is larger than the sum of its proper divisors (460270).

613684 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 13 representation: 613684 = (186436)₁₃.

613684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153425 (or 153423 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 613684 is about 783.3798567745. The cubic root of 613684 is about 84.9796491072.

The spelling of 613684 in words is "six hundred thirteen thousand, six hundred eighty-four".