264745 has 8 divisors (see below), whose sum is σ = 342216. Its totient is φ = 195456.

The previous prime is 264743. The next prime is 264749. The reversal of 264745 is 547462.

264745 = 29² + 30² + ... + 93².

It can be written as a sum of positive squares in 4 ways, for example, as 2601 + 262144 = 51^2 + 512^2 .

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 264745 - 2¹ = 264743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264743) 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, 1972 + ... + 2101.

It is an arithmetic number, because the mean of its divisors is an integer number (42777).

2²⁶⁴⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

264745 is a deficient number, since it is larger than the sum of its proper divisors (77471).

264745 is a wasteful number, since it uses less digits than its factorization.

264745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091.

The product of its digits is 6720, while the sum is 28.

The square root of 264745 is about 514.5337695429. The cubic root of 264745 is about 64.2109736905.

The spelling of 264745 in words is "two hundred sixty-four thousand, seven hundred forty-five".