264247 has 4 divisors (see below), whose sum is σ = 275760. Its totient is φ = 252736.

The previous prime is 264221. The next prime is 264263. The reversal of 264247 is 742462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 264247 - 2¹⁵ = 231479 is a prime.

It is a d-powerful number, because it can be written as 2³ + 6² + 2¹¹ + 4 + 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 (265247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5722 + ... + 5767.

It is an arithmetic number, because the mean of its divisors is an integer number (68940).

2²⁶⁴²⁴⁷ is an apocalyptic number.

264247 is a deficient number, since it is larger than the sum of its proper divisors (11513).

264247 is a wasteful number, since it uses less digits than its factorization.

264247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11512.

The product of its digits is 2688, while the sum is 25.

The square root of 264247 is about 514.0496085010. The cubic root of 264247 is about 64.1706869541.

The spelling of 264247 in words is "two hundred sixty-four thousand, two hundred forty-seven".