635256 has 64 divisors (see below), whose sum is σ = 1879200. Its totient is φ = 198144.

The previous prime is 635251. The next prime is 635263. The reversal of 635256 is 652536.

635256 is a `hidden beast` number, since 635 + 25 + 6 = 666.

635256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635251) by changing a digit.

635256 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 15 ways as a sum of consecutive naturals, for example, 3586 + ... + 3758.

2⁶³⁵²⁵⁶ 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 635256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939600).

635256 is an abundant number, since it is smaller than the sum of its proper divisors (1243944).

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

635256 is a wasteful number, since it uses less digits than its factorization.

635256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 195 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 635256 is about 797.0294850255. The cubic root of 635256 is about 85.9639293476.

The spelling of 635256 in words is "six hundred thirty-five thousand, two hundred fifty-six".