256483861 has 8 divisors (see below), whose sum is σ = 259872480. Its totient is φ = 253102512.

The previous prime is 256483853. The next prime is 256483873. The reversal of 256483861 is 168384652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256483861 - 2³ = 256483853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256483061) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 125395 + ... + 127423.

It is an arithmetic number, because the mean of its divisors is an integer number (32484060).

Almost surely, 2^256483861 is an apocalyptic number.

It is an amenable number.

256483861 is a deficient number, since it is larger than the sum of its proper divisors (3388619).

256483861 is a wasteful number, since it uses less digits than its factorization.

256483861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3635.

The product of its digits is 276480, while the sum is 43.

The square root of 256483861 is about 16015.1135181740. The cubic root of 256483861 is about 635.3602114412.

The spelling of 256483861 in words is "two hundred fifty-six million, four hundred eighty-three thousand, eight hundred sixty-one".