256327 has 4 divisors (see below), whose sum is σ = 258336. Its totient is φ = 254320.

The previous prime is 256313. The next prime is 256337. The reversal of 256327 is 723652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256327 - 2⁷ = 256199 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 5⁷ + 3 + 6⁶ + 2¹⁷ + 7³ .

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

256327 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 799 + ... + 1072.

It is an arithmetic number, because the mean of its divisors is an integer number (64584).

2²⁵⁶³²⁷ is an apocalyptic number.

256327 is a deficient number, since it is larger than the sum of its proper divisors (2009).

256327 is a wasteful number, since it uses less digits than its factorization.

256327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008.

The product of its digits is 2520, while the sum is 25.

The square root of 256327 is about 506.2874677493. The cubic root of 256327 is about 63.5230659999.

Adding to 256327 its reverse (723652), we get a palindrome (979979).

The spelling of 256327 in words is "two hundred fifty-six thousand, three hundred twenty-seven".