264857 has 4 divisors (see below), whose sum is σ = 274020. Its totient is φ = 255696.

The previous prime is 264839. The next prime is 264871. The reversal of 264857 is 758462.

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

It can be written as a sum of positive squares in 2 ways, for example, as 177241 + 87616 = 421^2 + 296^2 .

It is a cyclic number.

It is not a de Polignac number, because 264857 - 2⁶ = 264793 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 (264827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4538 + ... + 4595.

It is an arithmetic number, because the mean of its divisors is an integer number (68505).

2²⁶⁴⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

264857 is a deficient number, since it is larger than the sum of its proper divisors (9163).

264857 is an equidigital number, since it uses as much as digits as its factorization.

264857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9162.

The product of its digits is 13440, while the sum is 32.

The square root of 264857 is about 514.6425944284. The cubic root of 264857 is about 64.2200272013.

The spelling of 264857 in words is "two hundred sixty-four thousand, eight hundred fifty-seven".