256682013 has 16 divisors (see below), whose sum is σ = 391510656. Its totient is φ = 146534400.

The previous prime is 256682011. The next prime is 256682033. The reversal of 256682013 is 310286652.

256682013 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 256682013 - 2¹ = 256682011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256682011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18913 + ... + 29513.

It is an arithmetic number, because the mean of its divisors is an integer number (24469416).

Almost surely, 2^256682013 is an apocalyptic number.

It is an amenable number.

256682013 is a deficient number, since it is larger than the sum of its proper divisors (134828643).

256682013 is a wasteful number, since it uses less digits than its factorization.

256682013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11764.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 256682013 is about 16021.2987301280. The cubic root of 256682013 is about 635.5237896203.

The spelling of 256682013 in words is "two hundred fifty-six million, six hundred eighty-two thousand, thirteen".