264647 has 4 divisors (see below), whose sum is σ = 273216. Its totient is φ = 256080.

The previous prime is 264643. The next prime is 264659. The reversal of 264647 is 746462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746462 = 2 ⋅373231.

It is a cyclic number.

It is not a de Polignac number, because 264647 - 2² = 264643 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 6³ + 6³ + 4² + 4⁹ + 7 .

It is a Duffinian number.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 4238 + ... + 4299.

It is an arithmetic number, because the mean of its divisors is an integer number (68304).

2²⁶⁴⁶⁴⁷ is an apocalyptic number.

264647 is a deficient number, since it is larger than the sum of its proper divisors (8569).

264647 is an equidigital number, since it uses as much as digits as its factorization.

264647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8568.

The product of its digits is 8064, while the sum is 29.

The square root of 264647 is about 514.4385288837. The cubic root of 264647 is about 64.2030497738.

The spelling of 264647 in words is "two hundred sixty-four thousand, six hundred forty-seven".