256702 has 4 divisors (see below), whose sum is σ = 385056. Its totient is φ = 128350.

The previous prime is 256699. The next prime is 256721. The reversal of 256702 is 207652.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 64174 + ... + 64177.

It is an arithmetic number, because the mean of its divisors is an integer number (96264).

2²⁵⁶⁷⁰² is an apocalyptic number.

256702 is a deficient number, since it is larger than the sum of its proper divisors (128354).

256702 is a wasteful number, since it uses less digits than its factorization.

256702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128353.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 256702 is about 506.6576753588. The cubic root of 256702 is about 63.5540284588.

The spelling of 256702 in words is "two hundred fifty-six thousand, seven hundred two".