256898 has 4 divisors (see below), whose sum is σ = 385350. Its totient is φ = 128448.

The previous prime is 256889. The next prime is 256901. The reversal of 256898 is 898652.

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

It can be written as a sum of positive squares in only one way, i.e., 218089 + 38809 = 467^2 + 197^2 .

It is an unprimeable number.

256898 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64223 + ... + 64226.

2²⁵⁶⁸⁹⁸ is an apocalyptic number.

256898 is a deficient number, since it is larger than the sum of its proper divisors (128452).

256898 is a wasteful number, since it uses less digits than its factorization.

256898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128451.

The product of its digits is 34560, while the sum is 38.

The square root of 256898 is about 506.8510629366. The cubic root of 256898 is about 63.5701995061.

The spelling of 256898 in words is "two hundred fifty-six thousand, eight hundred ninety-eight".