256059647 has 8 divisors (see below), whose sum is σ = 272049600. Its totient is φ = 240547104.

The previous prime is 256059641. The next prime is 256059689. The reversal of 256059647 is 746950652.

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

It is a cyclic number.

It is not a de Polignac number, because 256059647 - 2¹⁰ = 256058623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256059598 and 256059607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256059641) 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, 118247 + ... + 120392.

It is an arithmetic number, because the mean of its divisors is an integer number (34006200).

Almost surely, 2^256059647 is an apocalyptic number.

256059647 is a deficient number, since it is larger than the sum of its proper divisors (15989953).

256059647 is a wasteful number, since it uses less digits than its factorization.

256059647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238705.

The product of its (nonzero) digits is 453600, while the sum is 44.

The square root of 256059647 is about 16001.8638601883. The cubic root of 256059647 is about 635.0097313903.

The spelling of 256059647 in words is "two hundred fifty-six million, fifty-nine thousand, six hundred forty-seven".