256260863 has 8 divisors (see below), whose sum is σ = 260357040. Its totient is φ = 252172800.

The previous prime is 256260793. The next prime is 256260869. The reversal of 256260863 is 368062652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256260863 - 2¹⁶ = 256195327 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 (256260869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106073 + ... + 108461.

It is an arithmetic number, because the mean of its divisors is an integer number (32544630).

Almost surely, 2^256260863 is an apocalyptic number.

256260863 is a deficient number, since it is larger than the sum of its proper divisors (4096177).

256260863 is a wasteful number, since it uses less digits than its factorization.

256260863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4057.

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

The square root of 256260863 is about 16008.1498931013. The cubic root of 256260863 is about 635.1760216345.

The spelling of 256260863 in words is "two hundred fifty-six million, two hundred sixty thousand, eight hundred sixty-three".