613730 has 16 divisors (see below), whose sum is σ = 1189944. Its totient is φ = 226560.

The previous prime is 613699. The next prime is 613733. The reversal of 613730 is 37316.

613730 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 4 ways, for example, as 395641 + 218089 = 629^2 + 467^2 .

It is not an unprimeable number, because it can be changed into a prime (613733) by changing a digit.

613730 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 7 ways as a sum of consecutive naturals, for example, 2231 + ... + 2490.

2⁶¹³⁷³⁰ is an apocalyptic number.

613730 is a deficient number, since it is larger than the sum of its proper divisors (576214).

613730 is a wasteful number, since it uses less digits than its factorization.

613730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4741.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 613730 is about 783.4092161827. The cubic root of 613730 is about 84.9817723314.

The spelling of 613730 in words is "six hundred thirteen thousand, seven hundred thirty".