256703 has 4 divisors (see below), whose sum is σ = 267888. Its totient is φ = 245520.

The previous prime is 256699. The next prime is 256721. The reversal of 256703 is 307652.

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 256703 - 2² = 256699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 11161 = 256703 / (2 + 5 + 6 + 7 + 0 + 3).

It is a d-powerful number, because it can be written as 2⁷ + 5⁷ + 7 + 6⁴ + 0 + 3¹¹ .

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

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 256703.

It is not an unprimeable number, because it can be changed into a prime (256723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5558 + ... + 5603.

It is an arithmetic number, because the mean of its divisors is an integer number (66972).

2²⁵⁶⁷⁰³ is an apocalyptic number.

256703 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

256703 is a deficient number, since it is larger than the sum of its proper divisors (11185).

256703 is a wasteful number, since it uses less digits than its factorization.

256703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11184.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 256703 is about 506.6586622175. The cubic root of 256703 is about 63.5541109850.

It can be divided in two parts, 256 and 703, that added together give a palindrome (959).

The spelling of 256703 in words is "two hundred fifty-six thousand, seven hundred three".