264644 has 6 divisors (see below), whose sum is σ = 463134. Its totient is φ = 132320.

The previous prime is 264643. The next prime is 264659. The reversal of 264644 is 446462.

It can be written as a sum of positive squares in only one way, i.e., 262144 + 2500 = 512^2 + 50^2 .

It is a d-powerful number, because it can be written as 2¹¹ + 6³ + 6³ + 4 + 4² + 4⁹ .

It is not an unprimeable number, because it can be changed into a prime (264643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33077 + ... + 33084.

It is an arithmetic number, because the mean of its divisors is an integer number (77189).

2²⁶⁴⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

264644 is a deficient number, since it is larger than the sum of its proper divisors (198490).

264644 is a wasteful number, since it uses less digits than its factorization.

264644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66165 (or 66163 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 264644 is about 514.4356130751. The cubic root of 264644 is about 64.2028071740.

It can be divided in two parts, 2 and 64644, that added together give a palindrome (64646).

The spelling of 264644 in words is "two hundred sixty-four thousand, six hundred forty-four".