256601206 has 16 divisors (see below), whose sum is σ = 398206368. Its totient is φ = 123928000.

The previous prime is 256601201. The next prime is 256601209. The reversal of 256601206 is 602106652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256601201) 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 7 ways as a sum of consecutive naturals, for example, 7210 + ... + 23773.

It is an arithmetic number, because the mean of its divisors is an integer number (24887898).

Almost surely, 2^256601206 is an apocalyptic number.

256601206 is a deficient number, since it is larger than the sum of its proper divisors (141605162).

256601206 is a wasteful number, since it uses less digits than its factorization.

256601206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31127.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 256601206 is about 16018.7766698959. The cubic root of 256601206 is about 635.4570921006.

Adding to 256601206 its reverse (602106652), we get a palindrome (858707858).

The spelling of 256601206 in words is "two hundred fifty-six million, six hundred one thousand, two hundred six".