256806883 has 4 divisors (see below), whose sum is σ = 265091008. Its totient is φ = 248522760.

The previous prime is 256806877. The next prime is 256806887. The reversal of 256806883 is 388608652.

It is a happy number.

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 256806883 - 2⁹ = 256806371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256806887) 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, 4142016 + ... + 4142077.

It is an arithmetic number, because the mean of its divisors is an integer number (66272752).

Almost surely, 2^256806883 is an apocalyptic number.

256806883 is a deficient number, since it is larger than the sum of its proper divisors (8284125).

256806883 is an equidigital number, since it uses as much as digits as its factorization.

256806883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8284124.

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 256806883 is about 16025.1952562207. The cubic root of 256806883 is about 635.6268289017.

The spelling of 256806883 in words is "two hundred fifty-six million, eight hundred six thousand, eight hundred eighty-three".