256761206 has 16 divisors (see below), whose sum is σ = 415744224. Its totient is φ = 118226304.

The previous prime is 256761187. The next prime is 256761223. The reversal of 256761206 is 602167652.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 146 + ... + 22661.

It is an arithmetic number, because the mean of its divisors is an integer number (25984014).

Almost surely, 2^256761206 is an apocalyptic number.

256761206 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

256761206 is a deficient number, since it is larger than the sum of its proper divisors (158983018).

256761206 is a wasteful number, since it uses less digits than its factorization.

256761206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23255.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 256761206 is about 16023.7700308011. The cubic root of 256761206 is about 635.5891413758.

The spelling of 256761206 in words is "two hundred fifty-six million, seven hundred sixty-one thousand, two hundred six".