256067747 has 8 divisors (see below), whose sum is σ = 275916144. Its totient is φ = 236240928.

The previous prime is 256067741. The next prime is 256067783. The reversal of 256067747 is 747760652.

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 256067747 - 2⁶ = 256067683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256067698 and 256067707.

It is not an unprimeable number, because it can be changed into a prime (256067741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26108 + ... + 34550.

It is an arithmetic number, because the mean of its divisors is an integer number (34489518).

Almost surely, 2^256067747 is an apocalyptic number.

256067747 is a deficient number, since it is larger than the sum of its proper divisors (19848397).

256067747 is a wasteful number, since it uses less digits than its factorization.

256067747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10789.

The product of its (nonzero) digits is 493920, while the sum is 44.

The square root of 256067747 is about 16002.1169537033. The cubic root of 256067747 is about 635.0164271279.

It can be divided in two parts, 2560 and 67747, that added together give a palindrome (70307).

The spelling of 256067747 in words is "two hundred fifty-six million, sixty-seven thousand, seven hundred forty-seven".