256608835 has 24 divisors (see below), whose sum is σ = 359567856. Its totient is φ = 175291200.

The previous prime is 256608817. The next prime is 256608841. The reversal of 256608835 is 538806652.

It is a happy number.

256608835 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256608835 - 2⁹ = 256608323 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256608791 and 256608800.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67485 + ... + 71185.

It is an arithmetic number, because the mean of its divisors is an integer number (14981994).

Almost surely, 2^256608835 is an apocalyptic number.

256608835 is a deficient number, since it is larger than the sum of its proper divisors (102959021).

256608835 is a wasteful number, since it uses less digits than its factorization.

256608835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003 (or 3996 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The square root of 256608835 is about 16019.0147949242. The cubic root of 256608835 is about 635.4633896211.

The spelling of 256608835 in words is "two hundred fifty-six million, six hundred eight thousand, eight hundred thirty-five".