256914771 has 8 divisors (see below), whose sum is σ = 344275200. Its totient is φ = 170415432.

The previous prime is 256914769. The next prime is 256914773. The reversal of 256914771 is 177419652.

It is a happy number.

256914771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (256914769) and next prime (256914773).

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

It is not a de Polignac number, because 256914771 - 2¹ = 256914769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256914773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214575 + ... + 215768.

It is an arithmetic number, because the mean of its divisors is an integer number (43034400).

Almost surely, 2^256914771 is an apocalyptic number.

256914771 is a deficient number, since it is larger than the sum of its proper divisors (87360429).

256914771 is a wasteful number, since it uses less digits than its factorization.

256914771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430545.

The product of its digits is 105840, while the sum is 42.

The square root of 256914771 is about 16028.5611019829. The cubic root of 256914771 is about 635.7158282118.

The spelling of 256914771 in words is "two hundred fifty-six million, nine hundred fourteen thousand, seven hundred seventy-one".