256682111 has 16 divisors (see below), whose sum is σ = 298856448. Its totient is φ = 215913600.

The previous prime is 256682081. The next prime is 256682117. The reversal of 256682111 is 111286652.

It is not a de Polignac number, because 256682111 - 2¹⁴ = 256665727 is a prime.

It is a super-2 number, since 2×256682111² = 131771412214832642, which contains 22 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256682117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118706 + ... + 120848.

It is an arithmetic number, because the mean of its divisors is an integer number (18678528).

Almost surely, 2^256682111 is an apocalyptic number.

256682111 is a deficient number, since it is larger than the sum of its proper divisors (42174337).

256682111 is a wasteful number, since it uses less digits than its factorization.

256682111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462.

The product of its digits is 5760, while the sum is 32.

The square root of 256682111 is about 16021.3017885564. The cubic root of 256682111 is about 635.5238705003.

The spelling of 256682111 in words is "two hundred fifty-six million, six hundred eighty-two thousand, one hundred eleven".