613261 has 8 divisors (see below), whose sum is σ = 674784. Its totient is φ = 552720.

The previous prime is 613253. The next prime is 613267. The reversal of 613261 is 162316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 613261 - 2³ = 613253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2026 + ... + 2308.

It is an arithmetic number, because the mean of its divisors is an integer number (84348).

2⁶¹³²⁶¹ is an apocalyptic number.

It is an amenable number.

613261 is a deficient number, since it is larger than the sum of its proper divisors (61523).

613261 is a wasteful number, since it uses less digits than its factorization.

613261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491.

The product of its digits is 216, while the sum is 19.

The square root of 613261 is about 783.1098262696. The cubic root of 613261 is about 84.9601197002.

Adding to 613261 its reverse (162316), we get a palindrome (775577).

The spelling of 613261 in words is "six hundred thirteen thousand, two hundred sixty-one".