256006 has 8 divisors (see below), whose sum is σ = 404280. Its totient is φ = 121248.

The previous prime is 255989. The next prime is 256019. The reversal of 256006 is 600652.

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

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3331 + ... + 3406.

It is an arithmetic number, because the mean of its divisors is an integer number (50535).

2²⁵⁶⁰⁰⁶ is an apocalyptic number.

256006 is a deficient number, since it is larger than the sum of its proper divisors (148274).

256006 is a wasteful number, since it uses less digits than its factorization.

256006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6758.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 256006 is about 505.9703548628. The cubic root of 256006 is about 63.4965381377.

Adding to 256006 its reverse (600652), we get a palindrome (856658).

The spelling of 256006 in words is "two hundred fifty-six thousand, six".