256966011 has 6 divisors (see below), whose sum is σ = 371173140. Its totient is φ = 171310668.

The previous prime is 256966007. The next prime is 256966027. The reversal of 256966011 is 110669652.

It is not a de Polignac number, because 256966011 - 2² = 256966007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256966081) 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 5 ways as a sum of consecutive naturals, for example, 14275881 + ... + 14275898.

It is an arithmetic number, because the mean of its divisors is an integer number (61862190).

Almost surely, 2^256966011 is an apocalyptic number.

256966011 is a deficient number, since it is larger than the sum of its proper divisors (114207129).

256966011 is a wasteful number, since it uses less digits than its factorization.

256966011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28551785 (or 28551782 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 256966011 is about 16030.1594190451. The cubic root of 256966011 is about 635.7580885479.

The spelling of 256966011 in words is "two hundred fifty-six million, nine hundred sixty-six thousand, eleven".