256046066 has 8 divisors (see below), whose sum is σ = 393436764. Its totient is φ = 124900480.

The previous prime is 256046047. The next prime is 256046069. The reversal of 256046066 is 660640652.

It can be written as a sum of positive squares in 2 ways, for example, as 156625225 + 99420841 = 12515^2 + 9971^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (256046069) 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 3 ways as a sum of consecutive naturals, for example, 1561175 + ... + 1561338.

Almost surely, 2^256046066 is an apocalyptic number.

256046066 is a deficient number, since it is larger than the sum of its proper divisors (137390698).

256046066 is a wasteful number, since it uses less digits than its factorization.

256046066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122556.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 256046066 is about 16001.4394977452. The cubic root of 256046066 is about 634.9985045535.

The spelling of 256046066 in words is "two hundred fifty-six million, forty-six thousand, sixty-six".