618256 has 20 divisors (see below), whose sum is σ = 1268892. Its totient is φ = 290816.

The previous prime is 618253. The next prime is 618257. The reversal of 618256 is 652816.

It can be written as a sum of positive squares in 2 ways, for example, as 518400 + 99856 = 720^2 + 316^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (618253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865 + ... + 1408.

2⁶¹⁸²⁵⁶ is an apocalyptic number.

It is an amenable number.

618256 is an abundant number, since it is smaller than the sum of its proper divisors (650636).

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

618256 is a wasteful number, since it uses less digits than its factorization.

618256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298 (or 2292 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 618256 is about 786.2925664153. The cubic root of 618256 is about 85.1901624854.

The spelling of 618256 in words is "six hundred eighteen thousand, two hundred fifty-six".