264664745 has 4 divisors (see below), whose sum is σ = 317597700. Its totient is φ = 211731792.

The previous prime is 264664723. The next prime is 264664769. The reversal of 264664745 is 547466462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547466462 = 2 ⋅273733231.

It can be written as a sum of positive squares in 2 ways, for example, as 160706329 + 103958416 = 12677^2 + 10196^2 .

It is a cyclic number.

It is not a de Polignac number, because 264664745 - 2⁶ = 264664681 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 264664696 and 264664705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26466470 + ... + 26466479.

It is an arithmetic number, because the mean of its divisors is an integer number (79399425).

Almost surely, 2^264664745 is an apocalyptic number.

It is an amenable number.

264664745 is a deficient number, since it is larger than the sum of its proper divisors (52932955).

264664745 is an equidigital number, since it uses as much as digits as its factorization.

264664745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52932954.

The product of its digits is 967680, while the sum is 44.

The square root of 264664745 is about 16268.5200617635. The cubic root of 264664745 is about 642.0448471371.

The spelling of 264664745 in words is "two hundred sixty-four million, six hundred sixty-four thousand, seven hundred forty-five".