264805 has 8 divisors (see below), whose sum is σ = 320544. Its totient is φ = 210000.

The previous prime is 264793. The next prime is 264811. The reversal of 264805 is 508462.

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

It is not a de Polignac number, because 264805 - 2¹⁷ = 133733 is a prime.

It is a Duffinian number.

264805 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 264805.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 930 + ... + 1180.

It is an arithmetic number, because the mean of its divisors is an integer number (40068).

2²⁶⁴⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

264805 is a deficient number, since it is larger than the sum of its proper divisors (55739).

264805 is a wasteful number, since it uses less digits than its factorization.

264805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 264805 is about 514.5920714508. The cubic root of 264805 is about 64.2158241031.

The spelling of 264805 in words is "two hundred sixty-four thousand, eight hundred five".