613256 has 32 divisors (see below), whose sum is σ = 1347840. Its totient is φ = 256128.

The previous prime is 613253. The next prime is 613267. The reversal of 613256 is 652316.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 613256.

It is not an unprimeable number, because it can be changed into a prime (613253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2516 + ... + 2748.

It is an arithmetic number, because the mean of its divisors is an integer number (42120).

2⁶¹³²⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 613256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (673920).

613256 is an abundant number, since it is smaller than the sum of its proper divisors (734584).

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

613256 is a wasteful number, since it uses less digits than its factorization.

613256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 289 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 613256 is about 783.1066338628. The cubic root of 613256 is about 84.9598888024.

Subtracting 613256 from its reverse (652316), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 613256 in words is "six hundred thirteen thousand, two hundred fifty-six".