256674641 has 16 divisors (see below), whose sum is σ = 274803840. Its totient is φ = 239205120.

The previous prime is 256674623. The next prime is 256674683. The reversal of 256674641 is 146476652.

It is a happy number.

256674641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 256674641 - 2¹⁴ = 256658257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256674241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157730 + ... + 159348.

It is an arithmetic number, because the mean of its divisors is an integer number (17175240).

Almost surely, 2^256674641 is an apocalyptic number.

It is an amenable number.

256674641 is a deficient number, since it is larger than the sum of its proper divisors (18129199).

256674641 is a wasteful number, since it uses less digits than its factorization.

256674641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816.

The product of its digits is 241920, while the sum is 41.

The square root of 256674641 is about 16021.0686597368. The cubic root of 256674641 is about 635.5177054046.

The spelling of 256674641 in words is "two hundred fifty-six million, six hundred seventy-four thousand, six hundred forty-one".