264286505 has 16 divisors (see below), whose sum is σ = 383771520. Its totient is φ = 170564352.

The previous prime is 264286493. The next prime is 264286507. The reversal of 264286505 is 505682462.

It is not a de Polignac number, because 264286505 - 2¹⁴ = 264270121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (264286507) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 221495 + ... + 222684.

It is an arithmetic number, because the mean of its divisors is an integer number (23985720).

Almost surely, 2^264286505 is an apocalyptic number.

It is an amenable number.

264286505 is a deficient number, since it is larger than the sum of its proper divisors (119485015).

264286505 is a wasteful number, since it uses less digits than its factorization.

264286505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444208.

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 264286505 is about 16256.8910004342. The cubic root of 264286505 is about 641.7388463996.

The spelling of 264286505 in words is "two hundred sixty-four million, two hundred eighty-six thousand, five hundred five".