256116806 has 32 divisors (see below), whose sum is σ = 435693600. Its totient is φ = 111847680.

The previous prime is 256116803. The next prime is 256116811. The reversal of 256116806 is 608611652.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256116803) 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, 145226 + ... + 146978.

It is an arithmetic number, because the mean of its divisors is an integer number (13615425).

Almost surely, 2^256116806 is an apocalyptic number.

256116806 is a deficient number, since it is larger than the sum of its proper divisors (179576794).

256116806 is a wasteful number, since it uses less digits than its factorization.

256116806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 256116806 is about 16003.6497712241. The cubic root of 256116806 is about 635.0569779612.

The spelling of 256116806 in words is "two hundred fifty-six million, one hundred sixteen thousand, eight hundred six".