264708865 has 4 divisors (see below), whose sum is σ = 317650644. Its totient is φ = 211767088.

The previous prime is 264708859. The next prime is 264708883. The reversal of 264708865 is 568807462.

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 43086096 + 221622769 = 6564^2 + 14887^2 .

It is a cyclic number.

It is not a de Polignac number, because 264708865 - 2¹³ = 264700673 is a prime.

It is a super-4 number, since 4×264708865⁴ (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 26470882 + ... + 26470891.

It is an arithmetic number, because the mean of its divisors is an integer number (79412661).

Almost surely, 2^264708865 is an apocalyptic number.

It is an amenable number.

264708865 is a deficient number, since it is larger than the sum of its proper divisors (52941779).

264708865 is an equidigital number, since it uses as much as digits as its factorization.

264708865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52941778.

The product of its (nonzero) digits is 645120, while the sum is 46.

The square root of 264708865 is about 16269.8759982982. The cubic root of 264708865 is about 642.0805217598.

The spelling of 264708865 in words is "two hundred sixty-four million, seven hundred eight thousand, eight hundred sixty-five".