4256635 has 4 divisors (see below), whose sum is σ = 5107968. Its totient is φ = 3405304.

The previous prime is 4256617. The next prime is 4256639. The reversal of 4256635 is 5366524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4256635 - 2⁷ = 4256507 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 4² + 2²² + 5² + 6 + 6⁶ + 3 + 5⁶ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4256597 and 4256606.

It is not an unprimeable number, because it can be changed into a prime (4256639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425659 + ... + 425668.

It is an arithmetic number, because the mean of its divisors is an integer number (1276992).

Almost surely, 2^4256635 is an apocalyptic number.

4256635 is a deficient number, since it is larger than the sum of its proper divisors (851333).

4256635 is an equidigital number, since it uses as much as digits as its factorization.

4256635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851332.

The product of its digits is 21600, while the sum is 31.

The square root of 4256635 is about 2063.1614091001. The cubic root of 4256635 is about 162.0648396649.

The spelling of 4256635 in words is "four million, two hundred fifty-six thousand, six hundred thirty-five".