268486571 has 4 divisors (see below), whose sum is σ = 272268144. Its totient is φ = 264705000.

The previous prime is 268486501. The next prime is 268486597. The reversal of 268486571 is 175684862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 268486571 - 2¹⁸ = 268224427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268486501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1890680 + ... + 1890821.

It is an arithmetic number, because the mean of its divisors is an integer number (68067036).

Almost surely, 2^268486571 is an apocalyptic number.

268486571 is a deficient number, since it is larger than the sum of its proper divisors (3781573).

268486571 is an equidigital number, since it uses as much as digits as its factorization.

268486571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3781572.

The product of its digits is 645120, while the sum is 47.

The square root of 268486571 is about 16385.5598317543. The cubic root of 268486571 is about 645.1205199145.

The spelling of 268486571 in words is "two hundred sixty-eight million, four hundred eighty-six thousand, five hundred seventy-one".