256206863 has 4 divisors (see below), whose sum is σ = 279498408. Its totient is φ = 232915320.

The previous prime is 256206829. The next prime is 256206869. The reversal of 256206863 is 368602652.

256206863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 256206863 - 2²² = 252012559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256206869) 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, 11645756 + ... + 11645777.

It is an arithmetic number, because the mean of its divisors is an integer number (69874602).

Almost surely, 2^256206863 is an apocalyptic number.

256206863 is a deficient number, since it is larger than the sum of its proper divisors (23291545).

256206863 is a wasteful number, since it uses less digits than its factorization.

256206863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23291544.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 256206863 is about 16006.4631633600. The cubic root of 256206863 is about 635.1314031492.

The spelling of 256206863 in words is "two hundred fifty-six million, two hundred six thousand, eight hundred sixty-three".