257847463 has 4 divisors (see below), whose sum is σ = 257881360. Its totient is φ = 257813568.

The previous prime is 257847433. The next prime is 257847467. The reversal of 257847463 is 364748752.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 257847463 - 2¹³ = 257839271 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 (257847467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343 + ... + 22711.

It is an arithmetic number, because the mean of its divisors is an integer number (64470340).

Almost surely, 2^257847463 is an apocalyptic number.

257847463 is a deficient number, since it is larger than the sum of its proper divisors (33897).

257847463 is a wasteful number, since it uses less digits than its factorization.

257847463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33896.

The product of its digits is 1128960, while the sum is 46.

The square root of 257847463 is about 16057.6294327650. The cubic root of 257847463 is about 636.4841906750.

The spelling of 257847463 in words is "two hundred fifty-seven million, eight hundred forty-seven thousand, four hundred sixty-three".