264563 has 8 divisors (see below), whose sum is σ = 291648. Its totient is φ = 238464.

The previous prime is 264559. The next prime is 264577. The reversal of 264563 is 365462.

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

It is a cyclic number.

It is not a de Polignac number, because 264563 - 2² = 264559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395 + ... + 827.

It is an arithmetic number, because the mean of its divisors is an integer number (36456).

2²⁶⁴⁵⁶³ is an apocalyptic number.

264563 is a deficient number, since it is larger than the sum of its proper divisors (27085).

264563 is a wasteful number, since it uses less digits than its factorization.

264563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493.

The product of its digits is 4320, while the sum is 26.

The square root of 264563 is about 514.3568799968. The cubic root of 264563 is about 64.1962562880.

The spelling of 264563 in words is "two hundred sixty-four thousand, five hundred sixty-three".