613705 has 4 divisors (see below), whose sum is σ = 736452. Its totient is φ = 490960.

The previous prime is 613699. The next prime is 613733. The reversal of 613705 is 507316.

613705 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 can be written as a sum of positive squares in 2 ways, for example, as 405769 + 207936 = 637^2 + 456^2 .

It is not a de Polignac number, because 613705 - 2⁵ = 613673 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61366 + ... + 61375.

It is an arithmetic number, because the mean of its divisors is an integer number (184113).

2⁶¹³⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

613705 is a deficient number, since it is larger than the sum of its proper divisors (122747).

613705 is a wasteful number, since it uses less digits than its factorization.

613705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122746.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 613705 is about 783.3932601191. The cubic root of 613705 is about 84.9806184183.

The spelling of 613705 in words is "six hundred thirteen thousand, seven hundred five".