256046065 has 8 divisors (see below), whose sum is σ = 335187648. Its totient is φ = 186215280.

The previous prime is 256046047. The next prime is 256046069. The reversal of 256046065 is 560640652.

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

It is not a de Polignac number, because 256046065 - 2¹¹ = 256044017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256046065.

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 7 ways as a sum of consecutive naturals, for example, 2327637 + ... + 2327746.

It is an arithmetic number, because the mean of its divisors is an integer number (41898456).

Almost surely, 2^256046065 is an apocalyptic number.

It is an amenable number.

256046065 is a deficient number, since it is larger than the sum of its proper divisors (79141583).

256046065 is a wasteful number, since it uses less digits than its factorization.

256046065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4655399.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 256046065 is about 16001.4394664980. The cubic root of 256046065 is about 634.9985037268.

The spelling of 256046065 in words is "two hundred fifty-six million, forty-six thousand, sixty-five".