256754 has 4 divisors (see below), whose sum is σ = 385134. Its totient is φ = 128376.

The previous prime is 256723. The next prime is 256757. The reversal of 256754 is 457652.

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., 207025 + 49729 = 455^2 + 223^2 .

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 256754.

It is not an unprimeable number, because it can be changed into a prime (256757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64187 + ... + 64190.

2²⁵⁶⁷⁵⁴ is an apocalyptic number.

256754 is a deficient number, since it is larger than the sum of its proper divisors (128380).

256754 is a wasteful number, since it uses less digits than its factorization.

256754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128379.

The product of its digits is 8400, while the sum is 29.

The square root of 256754 is about 506.7089894604. The cubic root of 256754 is about 63.5583195386.

The spelling of 256754 in words is "two hundred fifty-six thousand, seven hundred fifty-four".